Home > Data Services > Catalog . Restricted Data . Census . ACS

Search Data Services

Meta Search
search across all the following databases:

Data Catalog
Data and documentation

KnowledgeBase
Common questions and answers.

Resources
Entire collection of data resources.


Latest Data News

RSS Feed icon

Sage Stats and CQ Political Stats Trial

Breaking News: Protect the 2020 Census

The Fastest Growing US Cities Are Mostly In the West

Another rule from NIH: Demographers might get to ignore this one

Research on Health Disparities: Incarceration Matters

PUMA Equivalency Files

Each PUMS file provides records for states and many of their geographic levels. The 5% sample identifies every state and various subdivisions of states called "Public User Microdata Areas," each with at least 100,000 persons. These PUMAs were primarily based on counties, and may be whole counties, groups of counties, and places. When these entities have more than 200,000 persons, PUMAs can represent parts of counties, places, etc. None of these PUMAs on the 5% sample cross state lines.

On the other hand, the 1% sample was based primarily on metropolitan/nonmetropolitan areas, and contains PUMAs which were made from whole central cities, whole MSAs or PMSAs outside the central city, groups of MSAs or PMSAs, and groups of areas outside MSAs or PMSAs. When the areas have more than 200,000 persons, 1% PUMAs can represent parts of central cities, MSA/PMSAs, and so forth. 1% PUMAs may cross state lines and in that case state codes are not shown.

The following files represent the PUMA or county group definitions for 2000, 1990, and 1980 respectively. There are two versions of the equivalency data for 2000 and 1990. The first format is a visually pleasing list for each PUMS (directory format). The second version is a machine-readable format (data format) that requires a codebook to identify column locations.

Note: The 1980 equivalency files are provided in directory format only.

The following represents lines exerted from a 1990 directory format file.

  COMPONENTS OF 5% SAMPLE PUMAs
  ------------------------------------------------------------------
  STATE: 06   PUMA: 06901   MSA/PMSA: 6780  TOTAL POPULATION: 193688
  TYPE OF AREA: COUNTY/INDEPENDENT CITY(PART)
 
  NAME                  POPULATION  ST COU MCD PLACE TRACT MSA/PMSA
  CATHEDRAL CITY             30085  06 065      0465           6780
  COACHELLA                  16896  06 065      0555           6780
  DESERT HOT SPRINGS         11668  06 065      0765           6780
  INDIAN WELLS                2647  06 065      1327           6780
  INDIO                      36793  06 065      1330           6780
  LA QUINTA                  11215  06 065      1482           6780
  PALM DESERT                23252  06 065      2080           6780
  PALM SPRINGS               40181  06 065      2085           6780
  RANCHO MIRAGE               9887  06 065      2281           6780
  RIVERSIDE COUNTY (PART)     3869  06 065 010  9999  044903   6780
  RIVERSIDE COUNTY (PART)       13  06 065 010  9999  044901   6780
  RIVERSIDE COUNTY (PART)     1719  06 065 020  9999  045201   6780
  RIVERSIDE COUNTY (PART)     1951  06 065 020  9999  045202   6780
  RIVERSIDE COUNTY (PART)     3533  06 065 030  9999  044502   6780
  RIVERSIDE COUNTY (PART)       88  06 065 075  9999  044803   6780
  -------------------------------------------------------------------
  STATE: 01   PUMA: 00300   MSA/PMSA: 9999  TOTAL POPULATION: 126433
  TYPE OF AREA: COUNTIES/INDEPENDENT CITIES (2 OR MORE)

  NAME                  POPULATION  ST COU MCD PLACE TRACT MSA/PMSA
  BIBB COUNTY                16576  01 007                     9999 
  FAYETTE COUNTY             17962  01 057                     9999
  GREENE COUNTY              10153  01 063                     9999
  HALE COUNTY                15498  01 065                     9999
  LAMAR COUNTY               15715  01 075                     9999
  MARION COUNTY              29830  01 093                     9999
  PICKENS COUNTY             20699  01 107                     9999
  -------------------------------------------------------------------

  
  
  COMPONENTS OF 1% SAMPLE PUMAs
  -------------------------------------------------------------------
  STATE: 06   PUMA: 01802   MSA/PMSA: 5775  TOTAL POPULATION: 122246 
  TYPE OF AREA: MSA/PMSA-OUTSIDE CENTRAL CITY (PART)
 
  NAME                  POPULATION  ST COU MCD PLACE TRACT MSA/PMSA
  CLAYTON                     7317  06 013      0537           5775
  CONCORD                   111348  06 013      0595           5775
  CONTRA COSTA COUNTY(PART)   1061  06 013 028  9999  315099   5775
  CONTRA COSTA COUNTY(PART)    655  06 013 028  9999  333100   5775
  CONTRA COSTA COUNTY(PART)    126  06 013 028  9999  338100   5775
  CONTRA COSTA COUNTY(PART)      7  06 013 028  9999  355200   5775
  CONTRA COSTA COUNTY(PART)    517  06 013 028  9999  315000   5775
  CONTRA COSTA COUNTY(PART)    114  06 013 028  9999  355305   5775
  CONTRA COSTA COUNTY(PART)     81  06 013 028  9999  355304   5775
  CONTRA COSTA COUNTY(PART)    238  06 013 028  9999  355303   5775
  CONTRA COSTA COUNTY(PART)      6  06 013 028  9999  355301   5775
  CONTRA COSTA COUNTY(PART)     68  06 013 028  9999  355302   5775
  CONTRA COSTA COUNTY(PART)    708  06 013 107  9999  355102   5775
  ------------------------------------------------------------------