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Natality Data Summary

Summary This dataset has counts and rates of births occurring within the United States to U.S. residents and non-residents. State and county are defined by the mother's place of residence recorded on the birth certificate. Data elements include demographics, and maternal risk factors.

Privacy policy: As of May 23, 2011, all sub-national data representing zero to nine (0-9) births are suppressed. See Assurance of Confidentiality for more information.

Population Live births in the United States, 1995-2011.

Source

United States Department of Health and Human Services (US DHHS),
Centers for Disease Control and Prevention (CDC),
National Center for Health Statistics (NCHS),
Division of Vital Statistics (DVS),
Natality public-use data on CDC WONDER Online Database,
for years 1995-2002 published November 2005,
for years 2003-2006 published March 2009, and
for years 2007-2011 published November 2013.

In WONDER You can produce tables, maps, charts, and data extracts. Request national, state and county summary counts of live births for the years 1995-2008. Calculate birth rates (normalized to the total population) and fertility rates (normalized to females age 15 - 44 years old). Limit and index your data by any and all of these variables:

Natality Data Items

    Mother's residence:
  1. Location - National, Regional, Division, State and County (total population of 100,000 or more; no territories) of mother's legal residence at the time of birth.

  2. Mother's Characteristics:
    Available for All Years:
  3. Maternal Hispanic Origin - Central or South American; Cuban; Mexican; Non-Hispanic Black; Non - Hispanic other races; Non-Hispanic White; Origin unknown or not stated; Other and Unknown Hispanic; Puerto Rican;
  4. Marital Status - Married; Unmarried; Unknown or not stated.
  5. Age of Mother - under 15 years; 5 year age groups through age 54.
  6. Available Years 1995-2002:
  7. Maternal Race - American Indian or Alaska Native; Black; Chinese; Filipino; Guamanian; Hawaiian (includes part-Hawaiian); Japanese; Other Asian; White.
  8. Available Years 2003-2011:
  9. Maternal Race - American Indian or Alaska Native; Asian or Pacific Islander; Black or African American; White.
  10. Available Years 1995-2006:
  11. Maternal Education 0 - 8 years; 9 - 11 years;12 years; 13 - 15 years; 16 years and over; Not stated/Not on Certificate; Excluded.
  12. Available Years 2007-2011:
  13. Maternal Education 8th grade or less; 9th through 12th grade with no diploma; High school graduate or GED completed; Some college credit, but not a degree; Associate degree (AA, AS); Bachelor's degree (BA, AB, BS); Master's degree (MA, MS); Doctorate (PHD, EdD) or Professional Degree (MD, DDS, DVM, LLB, JD); Unknown/Not on certificate; Excluded.

  14. Birth Characteristics:
    Available for All Years:
  15. Year - 1995-2011. Three online databases are available: 1995-2002, 2003-2006, and 2007-2011.
  16. Gender(Sex) of Child - Female; Male.
  17. Birth Weight - 499 grams or less; 500 - 999 grams; 1000 - 1499 grams; 1500 - 1999 grams; 2000 - 2499 grams; 2500 - 2999 grams; 3000 - 3499 grams; 3500 - 3999 grams; 4000 - 4499 grams; 4500 - 4999 grams; 5000 - 8165 grams; not stated.
  18. Plurality or Multiple Birth - Single; Twin; Triplet; Quadruplet; Quintuplet or more.
  19. Available only for Years 1999-2002:
  20. Gestational Age at Birth - Under 20 weeks; 20 - 27 weeks; 28 - 31 weeks; 32 - 35 weeks; 36 weeks; 37 - 39 weeks; 40 weeks; 41 weeks; 42 weeks or more; Unknown.
  21. Available only for Years 2003 and later:
  22. Gestational Age Group1: Under 20 weeks; 20-27 weeks; 28-31 weeks; 32-35 weeks; 36 weeks; 37-39 weeks; 40 weeks; 41 weeks; 42 weeks or more; Unknown.
  23. Gestational Age Group2: Under 20 weeks; 20-27 weeks; 28-31 weeks; 32-33 weeks; 34-36 weeks; 37-38 weeks; 39 weeks, 40 weeks; 41 weeks; 42 or more weeks; Unknown.
  24. Gestational Age Weekly: 17 weeks; 18 weeks; 19 weeks; 20 weeks; 21 weeks; 22 weeks; 23 weeks; 24 weeks; 25 weeks; 26 weeks; 27 weeks; 28 weeks; 29 weeks; 30 weeks; 31 weeks; 32 weeks; 33 weeks; 34 weeks; 35 weeks; 36 weeks; 37 weeks; 38 weeks; 39 weeks; 40 weeks; 41 weeks; 42 weeks; 43 weeks; 44 weeks; 45 weeks; 46 weeks; 47 weeks; Unknown.
  25. Month - January-December.
  26. Weekday - Sunday-Saturday.
  27. Month When Maternal Prenatal Care Began - No prenatal care; 1st month through 9th month of pregnancy; Unknown or not stated; Not on Certificate.
  28. Live Birth Order - One child born alive to mother through six live births, and Not Stated.
  29. Birthplace - In Hospital; Not in Hospital; Unknown or Not Stated.
  30. Delivery Method - Cesarean, Not Stated, and Vaginal.
  31. Medical Attendant - Doctor of Medicine (MD); Doctor of Osteopathy (DO); Certified Nurse Midwife (CNM); Other Midwife; Other; Unknown or Not Stated.
  32. Only available year 2007 and later:
  33. Anencephalus Yes, No, Not Stated, Not Reported
  34. Cleft Lip / Palate Yes, No, Not Stated, Not Reported
  35. Down Syndrome Yes, No, Not Stated, Not Reported
  36. Omphalocele / Gastroschisis Yes, No, Not Stated, Not Reported
  37. Spina Bifida / Meningocele Yes, No, Not Stated, Not Reported

  38. Maternal Risk Factors:
    Available for All Years :
  39. Chronic Hypertension - Yes, No, Not Stated, Not Reported.
  40. Diabetes - Yes, No, Not Stated, Not Reported.
  41. Pregnancy-associated Hypertension - Yes, No, Not Stated, Not Reported.
  42. Eclampsia - Yes, No, Not Stated, Not Reported.
  43. Tobacco use during pregnancy - Yes; No; Not Stated, Not Reported.
  44. Available only for Years 1999-2006:
  45. Anemia - Yes, No, Not Stated, Not Reported.
  46. Cardiac Disease - Yes, No, Not Stated, Not Reported.
  47. Hydramnios/Oligohydramnios - Yes, No, Not Stated, Not Reported.
  48. Incompetent cervix - Yes, No, Not Stated, Not Reported.
  49. Lung disease (acute or chronic) - Yes, No, Not Stated, Not Reported.

Contents: Natality Data Request
Data Source Information
Additional Information
Natality Data Items
Frequently Asked Questions

Natality Data Request

Output You can produce tables, maps, charts, and data extracts. The following measures are available:
- Summary counts of births
- Birth rates (normalized to the total population)
- Fertility rates (normalized to females age 15-44)
Variables You can limit and index your data by any and all of the data variables.
How? The Request screen has sections to guide you through the making a data request as step-by-step process. However, first time users might want to simply press any Send button to get the default table. The data results for your query appear on the Table screen. Click the Request tab above the table to return to the Request screen and form another query. After you get your data results, click the Chart or Map tabs to go to those screens and makes charts or maps. Click the export button above the data table to download your data table as a tab-delimited line listed file.

For more information, see the following:

Quick Start Guide;
Step 1, Organize your request;
Step 2, Select maternal residence;
Step 3, Select other maternal characteristics;
Step 4, Select birth characteristics;
Step 5, Select maternal risk factors;
Step 6, Other options.

'By-Variables' Select variables that serve as keys (indexes) for organizing your data. See How do I organize my data? for more information.
Note:    To map your data, you must select at least one geographical location as a "By-Variable" for grouping your data, such as State.
Help Click on any button labeled "Help", located to the right hand side of the screen at the top of each section. Each Control's label, such as the "Location" label next to the Location entry box, is linked to the online help for that item.
Send Sends your data request to be processed on the CDC WONDER databases. The Send buttons are located on the bottom of the Request page, and also in the upper right corner of each section, for easy access.


Step 1. Organize table layout:

Group Results By   Select up to five variables to group (summarize, stratify, index) your data. For example, you could select to group your data by Year, State, Race and Gestational Age. See How do I organize my data? for more information.
Optional Measures:    Birth rates and fertility rates are available for the Natality data beginning in year 2003. Select the checkbox to report the desired rates.
Title:    Enter any desired description to display as a title with your results.


Group Results By

Select up to five variables that serve as keys for grouping your data. For example, you could select to group (summarize, stratify, index) your data by Year, State, Race and Gestational Age.

How?    See How do I organize my data? for more information.

Hints:   

  1. To make a map, you must request data with a geographic location variable, such as State, as a "By-Variable." Then click the Map tab.
  2. You cannot make charts when your data has more than two By-Variables.



Birth Rates

Birth rates are calculated as the number of births divided by total population in the given year(s).

When the numerator is sub-set by mother's race, location, or year of birth, then the same sub-set for race, location and year applies to the denominator population. If the data are sub-set by any other variable, then birth rates and denominator data are not available.

See Denominator Population Sources below for more information.

Notes:
  • Birth rates are available for the Natality data beginning in year 2003.
  • Birth rates are only available for the total population, or for mother's race, mother's place of residence and the year of birth. If data are grouped by any other variable, or limited for any other variable, then birth rates are not calculated. Comparable denominator data are not available for the other variables.


Fertility Rates

Fertility rates are calculated as the number of births divided by the number of females age 15 - 44 years old in the given year(s).

When the numerator is sub-set by mother's age, mother's race, location, or year of birth, then the same sub-set for age, race, location and year applies to the denominator population. If data are sub-set by any other variable, then fertility rates and denominator data are not available.

See Denominator Population Sources below for more information.

Notes:
  • Fertility rates are available for the Natality data since year 2003.
  • Fertility rates are only available for the total population, or for mother's age, mother's race, mother's place of residence and the year of birth. If data are grouped by any other variable, or limited for any other variable, then fertility rates are not calculated. Comparable denominator data are not available for the other variables.
  • Please note: For fertility rates calculated by WONDER before November 14, 2013, when the numerator was sub-set or limited to specific maternal age groups, then the population denominator was not sub-set of limited accordingly by age. Thus those fertility rates were calculated with a standard denominator population of all females ages 15 - 44 years of age, with other applicable subsets for mother's race, place of residence or infant's year of birth. This problem was corrected November 14, 2013. We apologize.


Denominator Population Sources

The current population sources for calculating birth and fertility rates come from two sources:

About Archive Rates and Populations

Archive rates and populations are available, in order to allow researchers to reproduce previously published rates. The archive populations displayed and used as the denominator for rates are bridged-race postcensal population estimates. Each year of archive population data is taken from the corresponding series year. For example, archive population data for 2009 is from the vintage 2009 series of postcensal population estimates, and the archive population data for 2008 is from the vintage 2008 series.

The archive denominator population sources for each year:
  • 2009 from the 2000-2009 (Vintage 2009) postcensal estimates of the July 1 resident population by year, county, single-year age groups, bridged-race, sex, and Hispanic origin released by NCHS on July 23, 2010.
  • 2008 from the 2000-2008 (Vintage 2008) postcensal estimates of the July 1 resident population by year, county, single-year age groups, bridged-race, sex, and Hispanic origin released by NCHS on September 2, 2009.
  • 2007 from the 2000-2007 (Vintage 2007) postcensal estimates of the July 1 resident population by year, county, single-year age groups, bridged-race, sex, and Hispanic origin released by NCHS on September 5, 2008.
  • 2006 from the 2000-2006 (Vintage 2006) postcensal estimates of the July 1 resident population by year, county, single-year age groups, bridged-race, sex, and Hispanic origin released by NCHS on August 16, 2007.
  • 2005 from the 2000-2005 (Vintage 2005) postcensal estimates of the July 1 resident population by year, county, single-year age groups, bridged-race, sex, and Hispanic origin released by NCHS on August 16, 2006.
  • 2004 from the 2000 to 2004 (Vintage 2004) postcensal estimates of the July 1 resident population by year, county, single-year age groups, bridged-race, sex, and Hispanic origin released by NCHS on September 8, 2005.
  • 2003 from the 2000 to 2003 (Vintage 2003) postcensal estimates of the July 1 resident population by year, county, single-year age groups, bridged-race, sex, and Hispanic origin released by NCHS on September 14, 2004.


Step 2. Select maternal residence:

Limit the population to specific location here. Alternately, you can leave the settings at the default values (the United States) and choose to organize or group the data results by State to show these stratifications.


Location

This dataset includes states (no territories) and counties with a total population over 100,000 persons. Limit your data request to specific locations here. You can select any number of locations. The default settings are national data, the United States.

How?  
  1. Click the round radio button to choose between Regions (two types of regions, both include states and counties) or States (includes Counties).
  2. See How do I use a Finder? for hints on how to search for and select your desired locations.
    • The default value is all locations (the United States).
    • See Finder Tool help for more hints.

Notes:   

  • Location is based on mother's legal residence recorded on the birth certificate.
  • About Counties: County-level data are shown for counties with populations of 100,000 persons or more. All counties with fewer than 100,000 persons are shown combined together under the label "Unknown County."
    • 1995-2002 data show counties with a population of 100,000 persons or more in the year 1990 Census.
    • 2003-2011 data show counties with a population of 100,000 persons or more in the year 2000 Census.
    • There are 66 more counties in the 2003-2011 data than in the 1995-2002 data.
  • About Regions and Divisions:
    • Regions and divisions are multi-state groups. Regions include states and counties, yet do not include territories. Choose between two types of regions:
      • four Census Regions, with nine sub-ordinate divisions, or
      • ten Health and Human Services (HHS) Regions.
    • Census Regions and Divisions from the United States Census Bureau:

      Census Region 1 - Northeast:

      • Division 1 - New England:    Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont.
      • Division 2 - Middle Atlantic:    New Jersey, New York, Pennsylvania.

      Census Region 2 - Midwest:

      • Division 3 - East North Central:    Illinois, Indiana, Michigan, Ohio, Wisconsin.
      • Division 4 - West North Central:    Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota.

      Census Region 3 - South:

      • Division 5 - South Atlantic:    Delaware, District of Columbia reporting area, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, West Virginia.
      • Division 6 - East South Central:    Alabama, Kentucky, Mississippi, Tennessee.
      • Division 7 - West South Central:    Arkansas, Louisiana, Oklahoma, Texas.

      Census Region 4 - West:

      • Division 8 - Mountain:    Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Wyoming.
      • Division 9 - Pacific:    Alaska, California, Hawaii, Oregon, Washington.

    • Health and Human Services (HHS) Regions:

      HHS Region 1 - Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont.

      HHS Region 2 - New Jersey, New York (data for Puerto Rico, Virgin Islands are not included here).

      HHS Region 3 - Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia.

      HHS Region 4 - Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee.

      HHS Region 5 - Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin.

      HHS Region 6 - Arkansas, Louisiana, New Mexico, Oklahoma, Texas.

      HHS Region 7 - Iowa, Kansas, Missouri, Nebraska.

      HHS Region 8 - Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming.

      HHS Region 9 - Arizona, California, Hawaii, Nevada (data for American Samoa and Guam are not included here).

      HHS Region 10 - Alaska, Idaho, Oregon, Washington

    • When you export the results of your data request, the location name and the codes are in separate columns.
    • To see the full set of available location values for Regions, group the data by HHS Region, State and County, or by Census Region, Division, State and County, and then export the results.
  • About state and county codes:
    • State and County codes are Federal Information Processing Standard (FIPS) codes. See the Locations section below for more information about how county FIPS codes have been modified for use in the Natality public-use data.
    • When you export the results of your data request, the location names and the FIPS codes are in separate columns.
    • To see the full list of State locations and codes, send a request and group results by State, then export the results of your data request.
    • See About Counties for more information about county-level data.



Step 3. Select other maternal characteristics:

Limit your data for any of the following data elements:

  1. Maternal Hispanic Origin - Central or South American; Cuban; Mexican; Non-Hispanic Black; Non - Hispanic other races; Non-Hispanic White; Origin unknown or not stated; Other and Unknown Hispanic; Puerto Rican;
  2. Marital Status - Married; Unmarried; Unknown or not stated.
  3. Age of Mother - under 15 years; 5 year age groups through age 54.
  4. Available Years 1995-2002:
  5. Maternal Race - American Indian or Alaska Native; Black; Chinese; Filipino; Guamanian; Hawaiian (includes part-Hawaiian); Japanese; Other Asian; White.
  6. Available Years 2003-2011:
  7. Maternal Race - American Indian or Alaska Native; Asian or Pacific Islander; Black or African American; White.
  8. Available Years 1995-2006:
  9. Maternal Education 0 - 8 years; 9 - 11 years; 12 years; 13 - 15 years; 16 years and over; Not stated/Not on Certificate; Excluded.
  10. Available Years 2007-2011:
  11. Maternal Education 8th grade or less; 9th through 12th grade with no diploma; High school graduate or GED completed; Some college credit, but not a degree; Associate degree (AA, AS); Bachelor's degree (BA, AB, BS); Master's degree (MA, MS); Doctorate (PHD, EdD) or Professional Degree (MD, DDS, DVM, LLB, JD); Unknown/Not on certificate; Excluded.


Maternal Hispanic Origin

This field indicates the Hispanic ethnicity of the mother.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. Public Health Information Network (PHIN) compatible codes are used when applicable.


 Code Label
 "2148-5"  Mexican 
 "2180-8"  Puerto Rican 
 "2182-4"  Cuban 
 "4"  Central or South American 
 "5"  Other and Unknown Hispanic 
 "6"  Non-Hispanic White 
 "7"  Non-Hispanic Black 
 "8"  Non - Hispanic other races 
 "9"  Origin unknown or not stated 


Maternal Race

Limit your data to the selected categories for the race of the mother. The default option is all race groups. Two sets of race groups are available:

  1. 1995-2002 data: American Indian or Alaska Native; Black; Chinese; Filipino; Guamanian; Hawaiian (includes part-Hawaiian); Japanese; Other Asian; White.
  2. 2003-2011 data: American Indian or Alaska Native; Asian or Pacific Islander; Black or African American; White.
How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. Public Health Information Network (PHIN) compatible codes are used when applicable.


Maternal Race years 1999-2002:
 Code Label
 "1002-5"  American Indian or Alaska Native 
 "2054-5"  Black or African American 
 "2034-7"  Chinese 
 "2036-2"  Filipino 
 "2076-8"  Hawaiian 
 "2039-6"  Japanese 
 "2028-9"  Other Asian 
 "2106-3"  White 


Maternal Race years 2003 and later:
 Code Label
 "1002-5"  American Indian or Alaska Native 
 "2054-5"  Black or African American 
 "A-PI"  Asian or Pacific Islander 
 "2106-3"  White 


Marital Status

This field indicates the marital status of the mother as recorded on the birth certificate.

How?     See How do I select items from the list box?.

Notes:   

  • Data for the mother's marital status are derived from the "DMAR" variable in the public use data for years 1995-2002, and from the "MAR" variable in the public use data for years 2003-2011.
  • When the data results are exported to a file, the Marital Status code is shown in a separate column from the category label.


     Code Label
     "01"  Married 
     "02"  Unmarried 
     "9"  Unknown or not stated 


Age of Mother

This field indicates the age group of the mother at the time of birth.

How?     See How do I select items from the list box?.

Note:    When the data results are exported to a file, two columns are provided, a column for the Age group code value and a column for the label.


 Code Label
 "15"  Under 15 years 
 "15-19"  15 - 19 years 
 "20-24"  20 - 24 years 
 "25-29"  25 - 29 years 
 "30-34"  30 - 34 years 
 "35-39"  35 - 39 years 
 "40-44"  40 - 44 years 
 "45-49"  45 - 49 years 
 "50-54"  50 - 54 years 


Maternal Education

This field indicates a range for the number of years of education received by the mother at the time of birth.

How?     See How do I select items from the list box?.

Notes:   

  • About Maternal Education data:
    Education information from the 2003 revision of the birth certificate is not comparable to the information based on the earlier certificate. Thus, Education data have been recoded to "Excluded" for births, based on the form of the birth certificate used in the mother's place of residence in the year the birth occurred.
    • For years 1995-2002, all reporting areas used the 1989 U.S. Standard Certificate of Live Birth and no data are recoded to "Excluded."
    • For years 2003-2006, the majority of reporting areas continued to use the 1989 U.S. Standard Certificate of Live Birth, and Education data from those reporting areas that had implemented the 2003 U.S. Standard Certificate of Live Birth are recoded to "Excluded." Note that prior to the February 2012 data update, these "Excluded" data were recoded to "Not on Certificate."
    • For years 2007-2011, Education data from those reporting areas that continued to use the 1989 U.S. Standard Certificate of Live Birth are recoded to "Excluded." Note the change from preceding years: Natality data for years 2003-2006 in CDC WONDER excluded Education data for the reporting areas that had adopted the 2003 U.S. Standard Certificate of Live Birth.
    The following reporting areas have Education data coded to "Excluded:"
    • For births that occurred in 2003: Pennsylvania and Washington state (2 reporting areas);
    • For births that occurred in 2004: Florida, Idaho, Kentucky, New Hampshire, New York (excluding New York City), Pennsylvania, South Carolina, Tennessee and Washington state (9 reporting areas);
    • For births that occurred in 2005: Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), Pennsylvania, South Carolina, Tennessee, Texas, Vermont and Washington state (13 reporting areas);
    • For births that occurred in 2006: California, Delaware, Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), North Dakota, Ohio, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Vermont, Washington state and Wyoming (19 reporting areas);
    • For births that occurred in 2007: Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nevada, New Jersey, New Mexico, New York (New York City only), North Carolina, Oklahoma, Oregon, Rhode Island, Utah, Virginia, West Virginia and Wisconsin (30 reporting areas);
    • For births that occurred in 2008: Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Utah, Virginia, West Virginia and Wisconsin (24 reporting areas).
    • For births that occurred in 2009: Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Virginia, West Virginia and Wisconsin (23 reporting areas).
    • For births that occurred in 2010: Alabama, Alaska, Arizona, Arkansas, Connecticut, Hawaii, Louisiana, Maine, Massachusetts, Minnesota, Mississippi, New Jersey, North Carolina, Rhode Island, Virginia, West Virginia and Wisconsin (17 reporting areas).
    • For births that occurred in 2011: Alabama, Alaska, Arizona, Arkansas, Connecticut, Hawaii, Maine, Massachusetts, Minnesota, Mississippi, New Jersey, Rhode Island, Virginia, and West Virginia (14 reporting areas).
  • When the data results are exported to a file, two columns are provided for Maternal Education, the code value and the label.


Maternal Education years 1999-2006:
 Code  Label
 "1"  0 - 8 years 
 "2"  9 - 11 years 
 "3"  12 years 
 "4"  13 - 15 years 
 "5"  16 years and over 
 "6"  Not stated/Not on Certificate 
 "999"  Excluded 



Maternal Education years 2007 and later:
 Code  Label
 "1"  8th grade or less 
 "2"  9th through 12th grade with no diploma 
 "3"  High school graduate or GED completed 
 "4"  Some college credit, but not a degree 
 "5"  Associate degree (AA, AS) 
 "6"  Bachelor's degree (BA, AB, BS) 
 "7"  Master's degree (MA, MS) 
 "8"  Doctorate (PHD, EdD) or Professional Degree (MD, DDS, DVM, LLB, JD) 
 "Unk"  Unknown/Not on certificate 
 "999"  Excluded 



Step 4. Select birth characteristics:

Limit your data for any of the following data elements:

             Available for all years:
  1. Year 1995-2002, or 2003-2006, or 2007-2011.
  2. Gender (Sex) of Child - Female; Male.
  3. Plurality or Multiple Birth - Single; Twin; Triplet; Quadruplet; Quintuplet or more.
  4. Birth Weight - 499 grams or less; 500 - 999 grams; 1000 - 1499 grams; 1500 - 1999 grams; 2000 - 2499 grams; 2500 - 2999 grams; 3000 - 3499 grams; 3500 - 3999 grams; 4000 - 4499 grams; 4500 - 4999 grams; 5000 - 8165 grams; not stated.
  5. Available only for Years 1999-2002:
  6. Gestational Age at Birth - Under 20 weeks; 20 - 27 weeks; 28 - 31 weeks; 32 - 35 weeks; 36 weeks; 37 - 39 weeks; 40 weeks; 41 weeks; 42 weeks or more; Unknown.
  7. Only available year 2003 and later:
  8. Month January - December.
  9. Weekday Sunday - Saturday.
  10. Gestational Age Group1: Under 20 weeks; 20-27 weeks; 28-31 weeks; 32-35 weeks; 36 weeks; 37-39 weeks; 40 weeks; 41 weeks; 42 weeks or more; Unknown.
  11. Gestational Age Group2: Under 20 weeks; 20-27 weeks; 28-31 weeks; 32-33 weeks; 34-36 weeks; 37-38 weeks; 39 weeks; 40 weeks; 41 weeks; 42 or more weeks; Unknown.
  12. Gestational Age Weekly: 17 weeks; 18 weeks; 19 weeks; 20 weeks; 21 weeks; 22 weeks; 23 weeks; 24 weeks; 25 weeks; 26 weeks; 27 weeks; 28 weeks; 29 weeks; 30 weeks; 31 weeks; 32 weeks; 33 weeks; 34 weeks; 35 weeks; 36 weeks; 37 weeks; 38 weeks; 39 weeks; 40 weeks; 41 weeks; 42 weeks; 43 weeks; 44 weeks; 45 weeks; 46 weeks; 47 weeks; Unknown.
  13. Month Prenatal Care Began - No prenatal care; 1st month through 10th month of pregnancy; Not stated/Not on Certificate; Excluded.
  14. Live Birth Order - One child born alive to mother through six live births, and Not Stated.
  15. Birthplace - In Hospital; Not in Hospital; Unknown or Not Stated.
  16. Delivery Method - Vaginal, Cesarean, and Not Stated.
  17. Medical Attendant - Doctor of Medicine (MD); Doctor of Osteopathy (DO); Certified Nurse Midwife (CNM); Other Midwife; Other; Unknown or Not Stated.
  18. Only available year 2007 and later:
  19. Anencephalus Yes, No, Not Stated, Not Reported
  20. Cleft Lip / Palate Yes, No, Not Stated, Not Reported
  21. Down Syndrome Yes, No, Not Stated, Not Reported
  22. Omphalocele / Gastroschisis Yes, No, Not Stated, Not Reported
  23. Spina Bifida / Meningocele Yes, No, Not Stated, Not Reported


Year

Pick any combination of years desired.
How?    See How do I select items from the list box?.

Gender of Child

This field indicates the gender of the child at birth.

How?     See How do I select items from the list box?.

Note:    When the data results are exported to a file, two columns are shown, a column for the code value and a column for the label.


 Code Label
 "F"  Female 
 "M"  Male 


Plurality or Multiple Birth

The Plurality field indicates if more than one infant shared the gestation and birth.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns.


 Code Label
 "1"  Single 
 "2"  Twin 
 "3"  Triplet 
 "4"  Quadruplet 
 "5"  Quintuplet or higher 


Gestational Age at Birth

Select a range of weeks that represents the duration of the pregnancy at the time of birth. Data for years 1995-2002:

  • Gestational Age at Birth:  Under 20 weeks; 20 - 27 weeks; 28 - 31 weeks; 32 - 35 weeks; 36 weeks; 37 - 39 weeks; 40 weeks; 41 weeks; 42 weeks or more; Unknown.
Data for years 2003 and later are organized in three groupings:
  1. Gestational Age - Group1:  Under 20 weeks; 20-27 weeks; 28-31 weeks; 32-35 weeks; 36 weeks; 37-39 weeks; 40 weeks; 41 weeks; 42 weeks or more; Unknown.
  2. Gestational Age - Group2:  Under 20 weeks; 20-27 weeks; 28-31 weeks; 32-33 weeks; 34-36 weeks; 37-38 weeks; 39 weeks; 40 weeks; 41 weeks; 42 or more weeks; Unknown.
  3. Gestational Age - Weekly:  17 weeks; 18 weeks; 19 weeks; 20 weeks; 21 weeks; 22 weeks; 23 weeks; 24 weeks; 25 weeks; 26 weeks; 27 weeks; 28 weeks; 29 weeks; 30 weeks; 31 weeks; 32 weeks; 33 weeks; 34 weeks; 35 weeks; 36 weeks; 37 weeks; 38 weeks; 39 weeks; 40 weeks; 41 weeks; 42 weeks; 43 weeks; 44 weeks; 45 weeks; 46 weeks; 47 weeks; Unknown.

How?  
  • Click a round button to switch between the gestational age lists for years 1999 and later.
  • Select your desired age groups. See How do I select items from the list box?.
  • Hint:
    For years 2003 and later you can only pick 1 gestational age list for any data request. The round radio button indicates the selected list, any selections in the other gestational age at birth lists are ignored. The gestational age at birth "by-variables" in section 1 and the radio button selections must match. For example, if you select to group by "Gestational Age - Weekly," then the radio button automatically sets to the "Gestational Age - Weekly" selection list. If you change the radio button to a different list, then the "by-variable" also changes to match.

Notes:   

  • The "Gestational Age at Birth" data for years 1995-2002 are derived from the "GESTAT10" variable in the public use data for years 1995-2002
  • The "Gestational Age - Group1", "Gestational Age - Group2", and "Gestational Age - Weekly" data are derived from the "COMBGEST" variable in the public use data for years 1999 and later.
  • "Gestational Age at Birth" for years 1995-2002 is named in year 2003 and later years "Gestational Age - Group1".
  • The categories in "Gestational Age Group2" changed with the April 2013 release. A new category was introduced: "39 weeks". The data code values changed, please see the tables below. Before the April 2013 release, the "Gestation Age Group2" categories for years 2003-2010 were: Under 20 weeks; 20-27 weeks; 28-31 weeks; 32-33 weeks; 34-36 weeks; 37-39 weeks; 40 weeks; 41 weeks; 42 or more weeks; Unknown.
  • When the data results are exported to a file, the Gestational Age codes are shown in a separate column from the category label.


Gestational Age - Group1 for 2003 and later years
and
Gestational Age at Birth for 1995-2002:
 Code Label
 "1"  Under 20 weeks  
 "2"  20 - 27 weeks  
 "3"  28 - 31 weeks  
 "4"  32 - 35 weeks  
 "5"  36 weeks  
 "6"  37 - 39 weeks  
 "7"  40 weeks  
 "8"  41 weeks  
 "9"  42 weeks or more 
 "10"  Unknown  


Gestational Age - Group2:
 Code Label
 "1"  Under 20 weeks  
 "2"  20-27 weeks  
 "3"  28-31 weeks  
 "4"  32-33 weeks  
 "5"  34-36 weeks  
 "6"  37-38 weeks  
 "7"  39 weeks  
 "8"  40 weeks  
 "9"  41 weeks  
 "10"  42 or more weeks 
 "11"  Unknown  


Gestational Age - Group2:
Values before the April 2013 release
 Code Label
 "1"  Under 20 weeks  
 "2"  20-27 weeks  
 "3"  28-31 weeks  
 "4"  32-33 weeks  
 "5"  34-36 weeks  
 "6"  37-39 weeks  
 "7"  40 weeks  
 "8"  41 weeks  
 "9"  42 or more weeks 
 "10"  Unknown  


Gestational Age - Weekly:
 Code Label
 "17"  17 weeks  
 "18"  18 weeks  
 "19"  19 weeks  
 "20"  20 weeks  
 "21"  21 weeks  
 "22"  22 weeks  
 "23"  23 weeks  
 "24"  24 weeks  
 "25"  25 weeks  
 "26"  26 weeks  
 "27"  27 weeks  
 "28"  28 weeks  
 "29"  29 weeks  
 "30"  30 weeks  
 "31"  31 weeks  
 "32"  32 weeks  
 "33"  33 weeks  
 "34"  34 weeks  
 "35"  35 weeks  
 "36"  36 weeks  
 "37"  37 weeks  
 "38"  38 weeks  
 "39"  39 weeks  
 "40"  40 weeks  
 "41"  41 weeks  
 "42"  42 weeks  
 "43"  43 weeks  
 "44"  44 weeks  
 "45"  45 weeks  
 "46"  46 weeks  
 "47"  47 weeks  
 "99"  Unknown  


Birth Weight

The Birth Weight field indicates weight ranges for the child at birth.

How?     See How do I select items from the list box?.

Notes:   

  • The categories in gram intervals and their equivalents in pounds and ounces are as follows:
    Less than 500 grams = 1 lb 1 oz or less
    500 - 999 grams = 1 lb 2 oz - 2 lb 3 oz
    1,000 - 1,499 grams = 2 lb 4 oz - 3 lb 4 oz
    1,500 - 1,999 grams = 3 lb 5 oz - 4 lb 6 oz
    2,000 - 2,499 grams = 4 lb 7 oz - 5 lb 8 oz
    2,500 - 2,999 grams = 5 lb 9 oz - 6 lb 9 oz
    3,000 - 3,499 grams = 6 lb 10 oz - 7 lb 11 oz
    3,500 - 3,999 grams = 7 lb 12 oz - 8 lb 13 oz
    4,000 - 4,499 grams = 8 lb l4 oz - 9 lb l4 oz
    4,500 - 4,999 grams = 9 lb 15 oz - 11 lb 0 oz
    5,000 grams or more = 11 lb l oz or more
  • About low birth weight:
    ICD - 9 and ICD - 10 define low birth weight as less than 2,500 grams. This is a shift of 1 gram from the previous criterion of 2,500 grams or less, which was recommended by the American Academy of Pediatrics in 1935 and adopted in 1948 by the World Health Organization in the International Lists of Diseases and Causes of Death, Sixth Revision.
  • When the data results are exported to a file, two columns are provided, a column for the code and a column for the label.

      Code Label
      "01"  499 grams or less 
      "02"  500 - 999 grams 
      "03"  1000 - 1499  
      "04"  1500 - 1999 grams 
      "05"  2000 - 2499 grams 
      "06"  2500 - 2999 grams 
      "07"  3000 - 3499 grams 
      "08"  3500 - 3999 grams 
      "09"  4000 - 4499 grams 
      "10"  4500 - 4999 grams 
      "11"  5000 - 8165 grams 
      "12"  Not stated 


Month

This field indicates month of birth.
How?    See How do I select items from the list box?.

Notes:   

  • For years 2003 and later the month data is derived from the "dob_mm" field found in the public use data.
  • When the data results are exported to a file, the code is shown in a separate column from the category label.


     Code Label
     "1"   January  
     "2"   February  
     "3"   March  
     "4"   April  
     "5"   May  
     "6"   June  
     "7"   July  
     "8"   August  
     "9"   September  
     "10"   October  
     "11"   November  
     "12"   December  


Weekday

This field indicates weekday of birth.
How?    See How do I select items from the list box?.

Notes:   

  • For years 2003 and later the month data is derived from the "dob_wk" field found in the public use data.
  • When the data results are exported to a file, the code is shown in a separate column from the category label.


     Code Label
     "1"   Sunday  
     "2"   Monday  
     "3"   Tuesday  
     "4"   Wednesday  
     "5"   Thursday  
     "6"   Friday  
     "7"   Saturday  
     "9"   Unknown  


Month Prenatal Care Began

This field indicates the month in the pregnancy when prenatal care began.

How?     See How do I select items from the list box?.

Notes:   

  • About Prenatal Care data:
    All reporting areas collect information on Prenatal care, but information from the 2003 revision of the birth certificate is not comparable to the information based on the earlier certificate. Thus, Prenatal Care data have been recoded to "Excluded" for births, based on the form of the birth certificate used in the mother's place of residence in the year the birth occurred.
    • For the years 1995-2002, all reporting areas used the 1989 U.S. Standard Certificate of Live Birth. No Prenatal Care data are recoded to "Excluded."
    • For the years 2003-2006, Prenatal care data are recoded to "Excluded" for births to mothers residing in a reporting area that used the 2003 U.S. Standard Certificate of Live Birth in the specified year. Note that prior to the February 2012 data update, these "Excluded" data were recoded to "Not on Certificate."
    • For years 2007-2011, Prenatal care data are recoded to "Excluded" for births to mothers residing in a reporting area that continued to use the 1989 U.S. Standard Certificate of Live Birth in the specified year. Note the change from the preceding years: Natality data for years 2003-2006 in CDC WONDER recoded Prenatal Care data for the reporting areas that had adopted the 2003 U.S. Standard Certificate of Live Birth.
    The following reporting areas have Prenatal Care data coded to "Excluded:"
    • For births that occurred in 2003: Pennsylvania and Washington state (2 reporting areas);
    • For births that occurred in 2004: Florida, Idaho, Kentucky, New Hampshire, New York(excluding New York City), Pennsylvania, South Carolina, Tennessee, and Washington state (9 reporting areas);
    • For births that occurred in 2005: Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), Pennsylvania, South Carolina, Tennessee, Texas, Vermont and Washington state (13 reporting areas);
    • For births that occurred in 2006: California, Delaware, Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), North Dakota, Ohio, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Vermont, Washington state and Wyoming. (19 reporting areas).
    • For births that occurred in 2007: Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nevada, New Jersey, New Mexico, New York (New York City only), North Carolina, Oklahoma, Oregon, Rhode Island, Utah, Virginia, West Virginia, and Wisconsin (30 reporting areas);
    • For births that occurred in 2008: Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Utah, Virginia, West Virginia and Wisconsin (24 reporting areas).
    • For births that occurred in 2009: Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Virginia, West Virginia and Wisconsin (23 reporting areas).
    • For births that occurred in 2010: Alabama, Alaska, Arizona, Arkansas, Connecticut, Hawaii, Louisiana, Maine, Massachusetts, Minnesota, Mississippi, New Jersey, North Carolina, Rhode Island, Virginia, West Virginia and Wisconsin (17 reporting areas).
    • For births that occurred in 2011: Alabama, Alaska, Arizona, Arkansas, Connecticut, Hawaii, Maine, Massachusetts, Minnesota, Mississippi, New Jersey, Rhode Island, Virginia and West Virginia (14 reporting areas).
  • When you export the results of your data request, the labels and the codes are in separate columns.


 Code Label
 "00"  No prenatal care  
 "01"  1st month  
 "02"  2nd month  
 "03"  3rd month  
 "04"  4th month  
 "05"  5th month  
 "06"  6th month  
 "07"  7th month  
 "08"  8th month  
 "09"  9th month  
 "10"  10th month  
 "99"  Not stated/Not on Certificate
 "98"   Excluded  


Live Birth Order

This field indicates the mother's total number of live births, including this birth. Live birth order data are only included for data in the year 2003 and later.

How?     See How do I select items from the list box?.

Notes:   

  • For years 2003 and later the live birth order data is derived from the "LBO_REC" field found in the public use data.
  • When the data results are exported to a file, the code is shown in a separate column from the category label.


     Code Label
     "01"  1st child born alive to mother 
     "02"  2nd children born alive to mother 
     "03"  3rd children born alive to mother 
     "04"  4th children born alive to mother 
     "05"  5th children born alive to mother 
     "06"  6th or more children born alive to mother 
     "99"  Unknown or not stated 


Birthplace

This field indicates the place of birth. Birthplace data are only included for data in the year 2003 and later.

How?     See How do I select items from the list box?.

Notes:   

  • For years 2003 and later the birthplace data is derived from the "BFACIL3" field found in the public use data.
  • When the data results are exported to a file, the code is shown in a separate column from the category label.


     Code Label
     "1"   In Hospital  
     "2"   Not in Hospital  
     "3"   Unknown or Not Stated  


Delivery Method

This field indicates whether the baby was born by Cesarean section or vaginal birth. Method of delivery data are only included for data in the year 2003 and later.

How?     See How do I select items from the list box?.

Notes:   

  • For years 2003 and later the method of delivery data is derived from the "DMETH_REC" field found in the public use data.
  • When the data results are exported to a file, the code is shown in a separate column from the category label.


     Code Label
     "1"   Vaginal  
     "2"   Cesarean  
     "9"   Not Stated  


Medical Attendant

This field indicates the attendant at the time of birth. Birth attendant data are only included for data in the year 2003 and later.

How?     See How do I select items from the list box?.

Notes:   

  • For years 2003 and later the birth Attendant data is derived from the "ATTEND" field found in the public use data.
  • When the data results are exported to a file, the code is shown in a separate column from the category label.


     Code Label
     "1"   Doctor of Medicine (MD)  
     "2"   Doctor of Osteopathy (DO)  
     "3"   Certified Nurse Midwife (CNM)  
     "4"   Other Midwife  
     "5"   Other  
     "9"   Unknown or Not Stated  


Birth Anomalies

Note that data for birth anomalies are only available for years 2007 and later. Birth anomaly data for New Mexico in 2007 are coded to "Not Reported."

  1. Anencephalus Yes, No, Not Stated, Not Reported
  2. Cleft Lip / Palate Yes, No, Not Stated, Not Reported
  3. Down Syndrome Yes, No, Not Stated, Not Reported
  4. Omphalocele / Gastroschisis Yes, No, Not Stated, Not Reported
  5. Spina Bifida / Meningocele Yes, No, Not Stated, Not Reported


  6. Congenital Anomaly of the Newborn Codes
     Code Label
     "1"  Yes 
     "2"  No 
     "9"  Not Stated 
     "10"  Not Reported 


    Anencephalus

    This field indicates whether Anencephalus is reported as a congenital anomaly of the newborn. Note that data for birth anomalies are only available for years 2007 and later.

    How?     See How do I select items from the list box?.

    Notes:   

    • New Mexico has Anencephalus data coded to "Not Reported" for births that occurred in 2007.
    • When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Congenital Anomaly of the Newborn Codes.


    Cleft Lip / Palate

    This field indicates whether Cleft Lip / Palate is reported as a congenital anomaly of the newborn. Note that data for birth anomalies are only available for years 2007 and later.

    How?     See How do I select items from the list box?.

    Notes:   

    • New Mexico has Cleft Lip / Palate data coded to "Not Reported" for births that occurred in 2007.
    • When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Congenital Anomaly of the Newborn Codes.


    Down Syndrome

    This field indicates whether Down Syndrome is reported as a congenital anomaly of the newborn. Note that data for birth anomalies are only available for years 2007 and later.

    How?     See How do I select items from the list box?.

    Notes:   

    • New Mexico has Down Syndrome data coded to "Not Reported" for births that occurred in 2007.
    • When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Congenital Anomaly of the Newborn Codes.


    Omphalocele / Gastroschisis

    This field indicates whether Omphalocele / Gastroschisis is reported as a congenital anomaly of the newborn. Note that data for birth anomalies are only available for years 2007 and later.

    How?     See How do I select items from the list box?.

    Notes:   

    • New Mexico has Omphalocele / Gastroschisis data coded to "Not Reported" for births that occurred in 2007.
    • When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Congenital Anomaly of the Newborn Codes.


    Spina Bifida / Meningocele

    This field indicates whether Spina Bifida / Meningocele is reported as a congenital anomaly of the newborn. Note that data for birth anomalies are only available for years 2007 and later.

    How?     See How do I select items from the list box?.

    Notes:   

    • New Mexico has Spina Bifida / Meningocele data coded to "Not Reported" for births that occurred in 2007.
    • When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Congenital Anomaly of the Newborn Codes.



Step 5. Select maternal risk factors:

Limit your data for any of the following data elements:

  1. Chronic Hypertension - Yes; No; Not Stated; Not Reported.
  2. Diabetes - Yes; No; Not Stated; Not Reported.
  3. Pregnancy-associated Hypertension - Yes; No; Not Stated; Not Reported.
  4. Eclampsia - Yes; No; Not Stated; Not Reported.
  5. Tobacco Use - Yes; No; Not Stated; Not Reported.
  6. Only available before year 2003:
  7. Anemia - Yes; No; Not Stated; Not Reported.
  8. Cardiac Disease - Yes; No; Not Stated; Not Reported.
  9. Hydramnios/Oligohydramnios - Yes; No; Not Stated; Not Reported.
  10. Incompetent cervix - Yes; No; Not Stated; Not Reported.
  11. Lung disease (acute or chronic) - Yes; No; Not Stated; Not Reported.



Maternal Risk Factor Codes and Labels
 Code Label
 "1"  Yes 
 "2"  No 
 "9"  Not Stated 
 "10"  Not Reported 


Chronic Hypertension Disease

This field indicates whether Chronic Hypertension Disease is reported as a maternal risk factor.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Diabetes

This field indicates whether Diabetes is reported as a maternal risk factor.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Pregnancy-associated Hypertension

This field indicates whether Pregnancy-associated Hypertension is reported as a maternal risk factor.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Eclampsia

This field indicates whether Eclampsia is reported as a maternal risk factor.

How?     See How do I select items from the list box?.

Notes:   

  • The following reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2007: Idaho, Kentucky, Nebraska, Pennsylvania, South Carolina, Tennessee, and Washington (7 reporting areas).
  • The following reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2008: Idaho, Kentucky, Michigan, Nebraska, New York (counties comprising New York City only), Pennsylvania, South Carolina, Tennessee, and Washington (9 reporting areas).
  • The following reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2009: Idaho, Kentucky, Michigan, Nebraska, New York (counties comprising New York City only), Pennsylvania, South Carolina, Tennessee, and Washington (9 reporting areas).
  • The following reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2010: Idaho, Kentucky, Michigan, Nebraska, New York (counties comprising New York City only), Pennsylvania, South Carolina, Tennessee, and Washington (9 reporting areas).
  • The following reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2011: Idaho, Kentucky, Michigan, Nebraska, New York (counties comprising New York City only), Pennsylvania, South Carolina, Tennessee, and Washington (9 reporting areas).
  • Please see the errata below for changes in the Eclampsia data for the New York city area births that occurred in 2008.
  • When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Tobacco use during pregnancy

This field indicates whether tobacco use was reported during the pregnancy.

How?     See How do I select items from the list box?.

Notes:   

  • All reporting areas, except California, routinely collect information on Maternal Tobacco Use, but information from the 2003 revision of the birth certificate, is not comparable to the information based on the earlier certificate. Thus Tobacco Use data are recoded, based on the form of birth certificate used by the mother's place of residence in the year of birth.
  • In the reporting years 1995-2002, data for tobacco use during pregnancy are recoded for the state of California, because California did not require reporting this risk factor. Tobacco Use data for California are recoded in WONDER as "Not Stated" for births occurring in years 1995-2002. Prior to the February 2012 data update, these data were recoded as "Unknown."
  • In the reporting years 2003-2006, data for tobacco use during pregnancy are recoded for several reporting areas, as noted below. Tobacco Use data for these reporting areas are recoded in WONDER as "Not Reported." California does not routinely collect Maternal Tobacco Use data. The other reporting areas listed have implemented the 2003 revised birth certificate, which collects smoking information differently and the data are not comparable to the data from the previous 1989 U.S. Standard Certificate of Live Birth. Prior to the February 2012 data update, these data were recoded as "Not on Certificate."
    • In reporting year 2003, maternal tobacco use data for 3 reporting areas, California, Pennsylvania and Washington state, have been recoded as "Not Reported."
    • In reporting year 2004, Maternal Tobacco Use data for 10 reporting areas, California, Florida, Idaho, Kentucky, New Hampshire, New York State (excluding New York City), Pennsylvania, South Carolina, Tennessee and Washington state, have been recoded as "Not Reported."
    • In reporting year 2005, Maternal Tobacco Use data for 14 reporting areas, California, Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York State (excluding New York City), Pennsylvania, South Carolina, Tennessee, Texas, Vermont and Washington state have been recoded as "Not Reported."
    • In reporting year 2006, Maternal Tobacco Use data for 19 reporting areas, California, Delaware, Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), North Dakota, Ohio, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Vermont, Washington state and Wyoming, have been recoded as "Not Reported."
  • In the reporting years 2007-2011, data have been recoded to "Not Reported" for births to mothers residing in a reporting area that used the 1989 U.S. Standard Certificate of Live Birth, or did not report Tobacco Use in the specified data year. Note the change from preceding years, which recoded data from the 2003 revision of the birth certificate.
    • In reporting year 2007, Maternal Tobacco Use data for 31 reporting areas, Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Florida, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nevada, New Jersey, New Mexico, New York (New York City only), North Carolina, Oklahoma, Oregon, Rhode Island, Virginia, West Virginia, and Wisconsin have been recoded as "Not Reported."
    • In reporting year 2008, Maternal Tobacco Use data for 27 reporting areas, Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Florida, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Virginia, West Virginia, and Wisconsin have been recoded as "Not Reported."
    • In reporting year 2009, Maternal Tobacco Use data for 26 reporting areas, Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Florida, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Virginia, West Virginia, and Wisconsin have been recoded as "Not Reported."
    • In reporting year 2010, Maternal Tobacco Use data for 20 reporting areas, Alabama, Alaska, Arizona, Arkansas, Connecticut, Florida, Georgia, Hawaii, Louisiana, Maine, Massachusetts, Michigan, Minnesota, Mississippi, New Jersey, North Carolina, Rhode Island, Virginia, West Virginia, and Wisconsin have been recoded as "Not Reported."
    • In reporting year 2011, Maternal Tobacco Use data for 15 reporting areas, Alabama, Alaska, Arizona, Arkansas, Connecticut, Hawaii, Maine, Massachusetts, Michigan, Minnesota, Mississippi, New Jersey, Rhode Island, Virginia and West Virginia have been recoded as "Not Reported."
  • When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Anemia

This field indicates whether anemia is reported as a maternal risk factor. These data are only available before year 2003.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Cardiac (Heart) Disease

This field indicates whether Cardiac (Heart) Disease is reported as a maternal risk factor. These data are only available before year 2003.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Hydramnios/Oligohydramnios

This field indicates whether Hydramnios/Oligohydramnios is reported as a maternal risk factor. These data are only available before year 2003.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Incompetent Cervix

This field indicates whether Incompetent Cervix is reported as a maternal risk factor. These data are only available before year 2003.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.


Lung disease (acute or chronic)

This field indicates whether Lung disease (acute or chronic) is reported as a maternal risk factor. These data are only available before year 2003.

How?     See How do I select items from the list box?.

Note:    When you export the results of your data request, the labels and the codes are in separate columns. See the table showing Maternal Risk Factor Codes.



Step 6. Other options:
Export Results   If checked, then query results are exported to a local file. More information on how to import this file into other applications can be found here.
How?   See CheckBox.
Show Totals   If checked, then totals and sub-totals display in the results table.
How?   See CheckBox.
Show Zero Values   If checked, then rows containing zero counts display in the results table. If unchecked, then zero count rows do not appear.
How?   See CheckBox.
Precision   Precision is not available for this dataset because population counts are whole numbers.
Data Access Timeout   This value specifies the maximum time to wait for the data access for a query to complete. If the data access takes too long to complete, a message will be displayed and you can increase the timeout or simplify your request. If you can't complete a request using the maximum timeout, contact user support and we will try to run a custom data request for you.

Data Source Information

To learn more about the methods and source of these data please refer to:

Publications:

See also VitalStats, for additional access and analysis of vital statistics data.


Additional Information


Suggested Citation United States Department of Health and Human Services (US DHHS),
Centers for Disease Control and Prevention (CDC),
National Center for Health Statistics (NCHS),
Division of Vital Statistics,
Natality public-use data on CDC WONDER Online Database,
for years 1995-2002 published November 2005,
for years 2003-2006 published March 2009, and
for years 2007-2011 published November 2013.

Each original annual dataset has a unique suggested citation. Please refer to Data Source Information to reference the original technical reference notes and citation for a specific year. See also National Vital Statistics - Birth Data for published reports and more.

Contact The National Center for Health Statistics welcomes comments and questions at nchsQuery@cdc.gov.
Notes:
  • Assurance of Confidentiality Constraints:   
    Data reports for years 1989 and later must meet the NCHS data use restrictions. Vital statistics data are suppressed due to confidentiality constraints, in order to protect personal privacy.
    The term "Suppressed" replaces sub-national births counts, birth rates and fertility rates, when the figure represents zero to nine (0-9) persons. Corresponding population denominator data are also suppressed when the figure represents fewer than ten persons.
    Prior to May 23, 2011, county-level data values representing fewer than 3 births were suppressed for years 2003 and later.
    Totals and sub-totals are suppressed when the value falls within scope of the suppression criteria, or when the summary value includes a single suppressed figure, in order to prevent the inadvertent disclosure of suppressed values.
    The confidentiality constraints are established by the original data providers. For more information, please contact the data providers.
  • Natality data for the United States are limited to births occurring within the United States to U.S. residents and non-residents. Births to non-residents of the United State are excluded from all tabulations in WONDER by place of residence. Births occurring to U.S. citizens outside the United States are not included.
  • All Natality data included in WONDER are reported in conformance to the reporting criteria of the mother's place of residence, rather than the actual criteria on the birth certificate issued by the reporting area of occurrence. For example, if a baby was born in Texas to a mother legally residing in California, then only those data items reported by California are included in the WONDER data set. The original Natality 2004 public use dataset includes data fields from the birth certificate, with an associated reporting flag for each field to indicate whether the mother's place of residence reports this item.
  • About "Unidentified Counties:"
    The label "Unidentified Counties" designates data for combined counties in the indicated state with less than 100,000 population. Note that not all counties in a given state show births that were registered in that county. The state total displays all tabulated births for a given state. Some counties are not associated with tabulated births due to confidentiality concerns. Counties with a total population less than 100,000 report births under "Unidentified Counties" to protect personal privacy.
  • About Maternal Tobacco Use:
    • In the years 1995-2002, data for tobacco use during pregnancy are excluded for the state of California, because California did not require reporting this risk factor. Tobacco Use data for California for years 1995-2002 has been recoded to "Not Stated." Prior to the February 2012 data update, these data were recoded as "Unknown."
    • In the years 2003 - 2006, tobacco use data are not available for all reporting areas. California did not routinely collect Maternal Tobacco Use data. The other reporting areas listed below have implemented the 2003 revised birth certificate, which collects smoking information differently and the data are not comparable to the data from the previous 1989 standard birth certificate. Prior to the February 2012 data update, these data were recoded as "Not on Certificate."
      • In 2003, Maternal Tobacco Use data for 3 reporting areas have been recoded as "Not Reported:"  California, Pennsylvania, and Washington state.
      • In 2004, Maternal Tobacco Use data for 10 reporting areas have been recoded as "Not Reported:"  California, Florida, Idaho, Kentucky, New Hampshire, New York State (excluding New York City), Pennsylvania, South Carolina, Tennessee and Washington state.
      • In 2005, Maternal Tobacco Use data for 14 reporting areas have been recoded as "Not Reported:"  California, Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), Pennsylvania, South Carolina, Tennessee, Texas, Vermont, and Washington state.
      • In 2006, Maternal Tobacco Use data for 19 reporting areas have been recoded as "Not Reported:" California, Delaware, Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), North Dakota, Ohio, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Vermont, Washington state and Wyoming.
    • In the years 2007 - 2008, tobacco use data have been recoded to "Not Reported" for births to mothers residing in a reporting area that used the 1989 U.S. Standard Certificate of Live Birth, or did not report Tobacco Use in the specified data year. Note the change from preceding years, which recoded data from the 2003 revision of the birth certificate.
      • In 2007, Maternal Tobacco Use data for 31 reporting areas have been recoded as "Not Reported:"  Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Florida, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nevada, New Jersey, New Mexico, New York (New York City only), North Carolina, Oklahoma, Oregon, Rhode Island, Virginia, West Virginia, and Wisconsin.
      • In 2008, Maternal Tobacco Use data for 27 reporting areas have been recoded as "Not Reported:"  Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Florida, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Virginia, West Virginia, and Wisconsin.
      • In 2009, Maternal Tobacco Use data for 26 reporting areas have been recoded as "Not Reported:"  Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Florida, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Virginia, West Virginia, and Wisconsin.
      • In 2010, Maternal Tobacco Use data for 20 reporting areas have been recoded as "Not Reported:"  Alabama, Alaska, Arizona, Arkansas, Connecticut, Florida, Georgia, Hawaii, Louisiana, Maine, Massachusetts, Michigan, Minnesota, Mississippi, New Jersey, North Carolina, Rhode Island, Virginia, West Virginia, and Wisconsin.
      • In 2011, Maternal Tobacco Use data for 15 reporting areas have been recoded as "Not Reported:"  Alabama, Alaska, Arizona, Arkansas, Connecticut, Hawaii, Maine, Massachusetts, Michigan, Minnesota, Mississippi, New Jersey, Rhode Island, Virginia and West Virginia
  • About Education and Prenatal Care data:
    Education and Prenatal Care data from the 2003 revision of the birth certificate are not comparable to the information based on the earlier certificate. Education and Prenatal Care data have been recoded to "Excluded" for births, based on the form of the birth certificate used in the mother's place of residence in the year the birth occurred.
    • For years 1995-2002, all reporting areas used the 1989 U.S. Standard Certificate of Live Birth and no data are recoded to "Excluded."
    • For years 2003-2006, Education and Prenatal Care data from those reporting areas that had implemented the 2003 U.S. Standard Certificate of Live Birth are recoded to "Excluded." Note that prior to the February 2012 data update, these "Excluded" data were recoded to "Not on Certificate." Education and Prenatal Care data for births to mothers residing in a reporting area that used the 2003 U.S. Standard Certificate of Live Birth are available online using the VitalStats data access tool at http://www.cdc.gov/nchs/VitalStats.htm.
      • For births in 2003, Education and Prenatal Care data are recoded to "Excluded" for 2 reporting areas:  Pennsylvania and Washington state.
      • For births in 2004, Education and Prenatal Care data are recoded to "Excluded" for 9 reporting areas:  Florida, Idaho, Kentucky, New Hampshire, New York (excluding New York City), Pennsylvania, South Carolina, Tennessee and Washington state.
      • For births in 2005, Education and Prenatal Care data are recoded to "Excluded" for 13 reporting areas:  Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), Pennsylvania, South Carolina, Tennessee, Texas, Vermont and Washington state.
      • For births in 2006, Education and Prenatal Care data are recoded to "Excluded" for 19 reporting areas:  California, Delaware, Florida, Idaho, Kansas, Kentucky, Nebraska, New Hampshire, New York (excluding New York City), North Dakota, Ohio, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Vermont, Washington state and Wyoming.
    • For years 2007-2008, Education and Prenatal Care data from those reporting areas that continued to use the 1989 U.S. Standard Certificate of Live Birth are recoded to "Excluded." Note the change from preceding years: Natality data for years 2003-2006 in CDC WONDER excluded Education and Prenatal Care data for the reporting areas that had adopted the 2003 U.S. Standard Certificate of Live Birth.
      • For births in 2007, Education and Prenatal Care data are recoded to "Excluded" for 30 reporting areas:  Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Georgia, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nevada, New Jersey, New Mexico, New York (New York City only), North Carolina, Oklahoma, Oregon, Rhode Island, Utah, Virginia, West Virginia and Wisconsin.
      • For births in 2008, Education and Prenatal Care data are recoded to "Excluded" for 24 reporting areas:  Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Utah, Virginia, West Virginia and Wisconsin.
      • For births in 2009: Education and Prenatal Care data are recoded to "Excluded" for 23 reporting areas:  Alabama, Alaska, Arizona, Arkansas, Connecticut, District of Columbia reporting area, Hawaii, Illinois, Louisiana, Maine, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Nevada, New Jersey, North Carolina, Oklahoma, Rhode Island, Virginia, West Virginia and Wisconsin.
      • For births in 2010: Education and Prenatal Care data are recoded to "Excluded" for 17 reporting areas:  Alabama, Alaska, Arizona, Arkansas, Connecticut, Hawaii, Louisiana, Maine, Massachusetts, Minnesota, Mississippi, New Jersey, North Carolina, Rhode Island, Virginia, West Virginia and Wisconsin.
      • For births in 2011: Education and Prenatal Care data are recoded to "Excluded" for 14 reporting areas:  Alabama, Alaska, Arizona, Arkansas, Connecticut, Hawaii, Maine, Massachusetts, Minnesota, Mississippi, New Jersey, Rhode Island, Virginia, and West Virginia.
  • About Eclampsia reporting in years 2007-2010:
    • The following 7 reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2007:  Idaho, Kentucky, Nebraska, Pennsylvania, South Carolina, Tennessee, and Washington.
    • The following 9 reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2008:  Idaho, Kentucky, Michigan, Nebraska, New York (counties comprising New York City only), Pennsylvania, South Carolina, Tennessee, and Washington.
    • The following 9 reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2009:  Idaho, Kentucky, Michigan, Nebraska, New York New York (counties comprising New York City only), Pennsylvania, South Carolina, Tennessee, and Washington.
    • The following 9 reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2010:  Idaho, Kentucky, Michigan, Nebraska, New York New York (counties comprising New York City only), Pennsylvania, South Carolina, Tennessee, and Washington.
    • The following 9 reporting areas have Eclampsia data coded to "Not Reported" for births that occurred in 2010:  Idaho, Kentucky, Michigan, Nebraska, New York New York (counties comprising New York City only), Pennsylvania, South Carolina, Tennessee, and Washington.
    • Please see the errata below for changes in the Eclampsia data for the New York city area births that occurred in 2008.
  • About the reporting of birth anomalies in New Mexico in year 2007:
    Data for New Mexico in 2007 has been coded to "Not Reported" for these fields:  Anencephalus, Cleft Lip / Palate, Down Syndrome, Omphalocele / Gastroschisis, and Spina Bifida.
  • About data updates released February 2012 for births in years 2003-2006:
    The February 2012 data update added the following 8 fields to the Natality 2003-2006 online database: Month, Weekday, Gestational Age Group1, Gestational Age Weekly, Live Birth Order, Birthplace, Delivery method, Medical Attendant. In addition, the label changed for recoded Education, Prenatal Care and Tobacco Use data.
  • Errata:  
    • The August 2004 release of the Natality Online database in CDC WONDER erroneously displayed the births by place of occurrence, instead of place of mother's legal residence, for the years 1999 - 2002. The August 2004 release of the Natality online database was taken off-line November 12, 2004, and this problem was corrected with the February 2005 release. We apologize, and ask that any data obtained from the Natality online database August 2004 release (available on the internet from September 10, 2004 to November 12, 2004) for the years 1999, 2000, 2001 and 2002 is reviewed, or documented with a note stating that for the years 1999-2002, the birth counts indicate the county of birth place, rather than the county of mother's legal residence.
    • With the release of the Natality data for the 2010 year in December 2012, revisions were made to the 2008 year data for the 5 counties that comprise New York City. The Eclampsia data for these 5 counties was recoded to “Not Reported” for those births that occurred in 2008. Before the December 2012 release, the Eclampsia data was mostly coded to “No” in the New York City area for births in 2008, with 23,139 births reported as “No” and suppressed values in other categories in Bronx county (Bronx Borough); 41,729 births reported as “No” and suppressed values in other categories in Kings county (Brooklyn Borough); 20,469 births reported as “No” and suppressed values in other categories New York county (Manhattan); 31,088 births reported as “No” and suppressed values in other categories in Queens; and 5,816 births reported as “No” and suppressed values in other categories in Richmond county (Staten Island).
    • For fertility rates calculated by WONDER before November 14, 2013, when the numerator was sub-set or limited to specific maternal age groups, then the population denominator was not sub-set of limited accordingly by age. Thus those fertility rates were calculated with a standard denominator population of all females ages 15 - 44 years of age, with other applicable subsets for mother's race, place of residence or infant's year of birth. This problem was corrected November 14, 2013. We apologize.
  • Please see Frequently Asked Questions about Natality below.
  • See Locations for more information about changes to state and county areas and codes over time.


Frequently Asked Questions about Natality

Why are the data results sometimes very slow in returning?

Some queries may take longer to run, such as 5-way tables or queries that sort through every record.

Why are there no records found for a specific county?

When viewing births sorted "by County," please note that not all counties in a given state show births that were registered in that county. The state total displays all tabulated births for a given state. Some counties are not associated with tabulated births due to confidentiality concerns. Counties with a total population less than 100,000 persons report births under "Unidentified Counties" to protect personal privacy. The label "Unidentified Counties" designates the combined counties with less than 100,000 population in the indicated state. 1995-2002 data show counties with a population of 100,000 persons or more in the year 1990 Census. 2003-2011 data show counties with a population of 100,000 persons or more in the year 2000 Census. There are 66 more counties in the 2003-2009 data than in the 1995-2002 data. If there are no records of births for a specific county, then request data for the entire state, grouped by County, to see the state total and the reporting counties for each state.

What data elements are available in the Natality data?

Please see Natality Data Items for more information.

What other technical notes for this data are available?

Please see the following sources:
National Vital Statistics - Birth Data
Vital Stats Online Downloadable Data Files
Scientific Data Documentation - Natality

What are the data privacy restrictions for Natality data?

  • Counties with a total population less than 100,000 persons report births under "Unidentified Counties" to protect personal privacy. The label "Unidentified Counties" designates the combined counties with less than 100,000 population in the indicated state. 1995-2002 data show counties with a population of 100,000 persons or more in the year 1990 Census. 2003-2011 data show counties with a population of 100,000 persons or more in the year 2000 Census.
  • Sub-national data representing fewer than ten persons are suppressed. See Assurance of Confidentiality for more information.
  • See also CDC WONDER and NCHS data use restrictions.

What about data from the August 2004 release?

The August 2004 release of the Natality Online database in CDC WONDER erroneously displayed the births by place of occurrence, instead of place of mother's legal residence, for the years 1999 - 2002. The Natality online database was taken off line November 12, 2004, and this problem was corrected with the February 2005 release. We apologize, and ask that any data obtained from the Natality online database August 2004 release (available on the internet from September 10, 2004 to November 12, 2004) for the years 1999, 2000, 2001 and 2002 is reviewed, or documented with a note stating that for the years 1999-2002, the birth counts report the county of birth place, rather than the county of mother's legal residence.


Locations - About FIPS State and County Codes

The FIPS state and county codes were established by the National Bureau of Standards, U.S. Department of Commerce in 1968. This standard set of codes provides names and codes for counties and county equivalents of the 50 states of the United States and the District of Columbia reporting area. Counties are considered to be the "first order subdivisions " of each State, regardless of their local designation (county, parish, borough). Washington, D.C.; the consolidated government of Columbus, Georgia; the independent cities of the States of Maryland, Missouri, Nevada, and Virginia; the census areas and boroughs of Alaska; and that part of Yellowstone Park in Montana are identified as county equivalents. The system is standard throughout the Federal Government. The State codes are ascending, two-digit numbers; the county codes are ascending three-digit numbers. For both the State and county codes, space has been left for new States or counties. Some changes in the FIPS codes have occurred since 1968.

A modified version of the FIPS state and county codes is used to identify states and counties on NCHS public-use data files. The modifications as implemented in the Natality public-use data are described below.

Modifications of FIPS State and County Codes

  1. Counties with populations under 100,000 persons are grouped into "Unidentified Counties" (FIPS code 999) to protect privacy.
    • 1995-2002 data shows counties with a population of 100,000 persons or more in the year 1990 Census.
    • 2003-2011 data shows counties with a population of 100,000 persons or more in the year 2000 Census.
    • There are 66 more counties in the 2003-2011 data than in the 1995-2002 data.
  2. A portion of Adams county, Colorado (FIPS code 08001) was moved into Broomfield County, Colorado (FIPS code 08014), which was created effective November 15, 2001 from parts of four counties: Adams, Boulder, Jefferson, and Weld. However, this new county does not appear on this file.
  3. A portion of Boulder county, Colorado was moved into Broomfield County, Colorado (FIPS code 08014), which was created effective November 15, 2001 from parts of four counties: Adams, Boulder, Jefferson, and Weld. However, this new county does not appear on this file.
  4. A portion of Weld county, Colorado was moved into Broomfield County, Colorado (FIPS code 08014), which was created effective November 15, 2001 from parts of four counties: Adams, Boulder, Jefferson, and Weld. However, this new county does not appear on this file.
  5. Dade county, Florida (FIPS code 12025) was renamed Miami-Dade County (FIPS code 12086) effective November 13, 1997. However, the area is coded to Dade (12025) for all years.
  6. The independent city of Baltimore, Maryland (FIPS code 24510) is reported separately from Baltimore county (FIPS code 24005).
  7. The independent city of St. Lois, Missouri (FIPS code 29510) is reported separately from St. Louis county (FIPS code 29189).
  8. St. Louis county (FIPS code 29189) is reported separately from the independent city of St. Lois, Missouri (FIPS code 29510).
  9. Bronx, New York (FIPS code 36005) represents Bronx Borough, New York City.
  10. Kings county, New York (FIPS code 36047) represents Brooklyn Borough, New York City.
  11. New York county, New York (FIPS code 36061) represents Manhattan Borough, New York City.
  12. Queens, New York (FIPS code 36081) represents Queens Borough, New York City.
  13. Richmond county, New York (FIPS code 36085) represents Staten Island Borough, New York City.




This page last reviewed: Thursday, January 23, 2014
This information is provided as technical reference material. Please contact us at cwus@cdc.gov to request a simple text version of this document.