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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 NameRestricted Variable Label
NHANES 2009-2010
Documentation

NHANES 2007-2008
Documentation

NHANES 2005-2006
Documentation

NHANES 1999-2004
Documentation
REGION4 Census Regions created from STATE2K
STD_5ZipZipcode
LATLatitude in decimal format with up to 6 decimal precision
LONLongitude in decimal format with up to 6 decimal precision
STATE2KCensus 2000 FIPS state code
CNTY2KCensus 2000 FIPS County code
TRACT2KCensus 2000 tract/BNA (leading zeros with the decimal point impiled)
BG2KCensus 2000 block group
BLOCK2KCensus 2000 block ID - first character is the census block group
NHANES III
Documentation [PDF - 142 KB]
REGION4 Census Regions created from STATE
STD_5ZipZip code
LATLatitude
STATEFIP State Code
COUNTYFIP County Code
TRACT_801980 Tract Code (4 Digits)
TCBNA_801980 TractBNA Code (6 Digits)
BG_801980 Block Group Code
BLCK_801980 Block Code
TRACT_901990 Tract Code (4 Digits)
TCBNA_901990 TractBNA Code (6 Digits)
BG_901990 Block Group Code
BLCK_901990 Block Code

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