Research Data Center
National Health Interview Survey (NHIS) Geocodes
Return to List of Geocodes by NCHS Data System
The following lists the geographic variables that exist within NHIS. The special project restricted-use variables include geocodes that have been added to the datasets from Census. The variable label explains the variable name. When applying for access to this data through the RDC, please specify the variable name in your data dictionary.
Year |
Public-Use Variable Name (Household File) |
Restricted-Use Variable Name |
Restricted-Use Variable Description |
Special Project Restricted-Use Variable Name1 |
Special Project Restricted-Use Variable Description |
|---|---|---|---|---|---|
2006 |
REGION |
STATE |
State |
|
|
2004-2005 |
REGION |
STATE |
State |
CODE |
Census Year |
2002-2003 |
REGION |
STATE |
State |
CODE |
Census Year |
1999-2000 |
REGION |
STATE |
State |
CODE |
Census Year |
1997-1998 |
REGION |
STATE |
State |
CODE |
Census Year |
1995-1996 |
REGION |
HHLOC |
State |
CODE |
Census Year |
1990-1994 |
REGION |
|
State |
STATEFP |
State FIPS code |
IMPORTANT NOTES:
1 Special restricted-use household file that links to Census geocodes. 1995-2005 is linked to 1990 or 2000 Census geocodes and 1985-1994 are linked to 1990 Census codes.
2 These variables are located in a special public-use MSA file. In 1996 the file is named “msacod96.exe” and is stored separately from the “Datasets” part of the NHIS website. In 1995 the file is named “msacod95.exe” and is stored separately from the “Datasets” part of the NHIS website.
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