National Health and Nutrition Examination Survey (NHANES) Geocodes
The following table lists the geographic variables in NHANES III and Continuous NHANES. The special project restricted use variables include geocodes that have been added to the regular restricted use datasets. When applying for access to this data through the RDC, please specify the variable name in your data dictionary.
| Restricted Variable Name | Restricted Variable Label | |
|---|---|---|
|
NHANES 2007-2008 Documentation [PDF - 175 KB] NHANES 2005-2006 Documentation [PDF - 121 KB] NHANES 1999-2004 Documentation [PDF - 118 KB] |
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| REGION | 4 Census Regions created from STATE2K | |
| STD_5Zip | Zipcode | |
| LAT | Latitude in decimal format with up to 6 decimal precision | |
| LON | Longitude in decimal format with up to 6 decimal precision | |
| STATE2K | Census 2000 FIPS state code | |
| CNTY2K | Census 2000 FIPS County code | |
| TRACT2K | Census 2000 tract/BNA (leading zeros with the decimal point impiled) | |
| BG2K | Census 2000 block group | |
| BLOCK2K | Census 2000 block ID - first character is the census block group | |
| NHANES III Documentation [PDF - 142 KB] |
REGION | 4 Census Regions created from STATE |
| STD_5Zip | Zip code | |
| LAT | Latitude | |
| STATE | FIP State Code | |
| COUNTY | FIP County Code | |
| TRACT_80 | 1980 Tract Code (4 Digits) | |
| TCBNA_80 | 1980 TractBNA Code (6 Digits) | |
| BG_80 | 1980 Block Group Code | |
| BLCK_80 | 1980 Block Code | |
| TRACT_90 | 1990 Tract Code (4 Digits) | |
| TCBNA_90 | 1990 TractBNA Code (6 Digits) | |
| BG_90 | 1990 Block Group Code | |
| BLCK_90 | 1990 Block Code |
