1990 Public Use Microdata Samples - 1% Sample
PUMA Equivalency File
Data Dictionary

DATA          SIZE     BEGIN     COLUMN RANGE

FILE          2        1         1-2
     State Code Identifier for File
 01..56
     99  .FIPS state code (See appendix I - PUMS Technical Documentation)
             (note:  FILE 99 - cross-state PUMA file)

STATE         2        3         3-4
     State Code
 01..56  .FIPS state code (See appendix I - PUMS Technical Documentation)

PUMA          5        5         5-9
     Public use microdata area (state dependent)
00100..
  99999  .PUMA code (includes tract groups) 1st 3
         .Digits = main PUMA - generally county place
         .Last 2 digits = groups of tracts, BNA, etc.

ATYPE         2        10        10-11
     Area type revised for PUMS equivalency file
     10  .Central city
     11  .Central city part
     20  .MSA/PMSA - Outside central city
     21  .MSA/PMSA - Outside central city (part)
     22  .Central city (part) & outside central city (part)
     30  .Entire MSA
     31  .2 or more MSAs/PMSAs
     40  .Mixed MSA/PMSA/NON-MSA/PMSA area
     50  .Outside MSA/PMSA

MSAPMSA       4        12        12-15
     MSA/PMSA (overall code for PUMA)
 0040..
   9340  .FIPS/MSA/PMSA code, selected MSA/PMSA
         .(See appendix G - PUMS Technical Documentation)
   9997  .Mixed MSA/PMSA Non-MSA/PMSA area
   9998  .2 or more MSAs
   9999  .Not in MA

COUNTY        3        16        16-18
     County Code
  001..
    840  .FIPS county code

PMSA          4        19        19-22
     MSA/PMSA of PUMA component
 0040..
   9340  .FIPS/MSA/PMSA code
         .(See appendix G - PUMS Technical Documentation)
   9999  .Not in MA

PLACE         4        23        23-26
     Named Place Code
 0002..
   9998  .FIPS place code
   9999  .Not in named place

MCD           3        27        27-29
     Minor Civil Division code

TRACT         6        30        30-36
     Census Tract/BNA code

POP           7        37        37-43
     Total Population of PUMA component

NAME          30       44        44-73
     Name of PUMA component
          (NOTE:  longer names truncated to 30 characters)


NOTE TO USERS:  The 99 file containing households/persons located
in PUMAs which cross state boundaries contains cases coded PUMA
600 and PUMA 700.  It is believed that those cases are incorrectly
coded.  It is not yet determined whether these cases should have
a different PUMA coding or if they should have a PUMA coding
similar to other cases in the file.  Caution should be used
when working with this data.