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Census 1990 Short Form Blocks variables
| AreaKey | Block Code (15 characters) |
| INTPTLAT | Internal point (latitude six decimal places) |
| INTPTLNG | Internal point (longitude six decimal places) |
| Region | Region |
| Divis | Division |
| Stat_ab | State/US Abbreviation |
| Stat_ce | State (Census) |
| Stat_fp | State (FIPS) |
| County | County |
| Cnty80 | 1980 FIPS county code (incl. state) |
| Tract | Census Tract/Block Numbering area |
| Tract80 | 1980 census tract/BNA (where app.) |
| BG | Block group |
| Block | Block |
| CNTYSC | County population Size Code |
| Reserv1 | Reserved 1 |
| CD102 | Congressional District (102st Congress) |
| CD103 | Congressional District (103st Congress) |
| CONCITCE | Consolidated City (Census) |
| CONCITFP | Consolidated City (FIPS) |
| CONCITCC | Consolidated City Class Code |
| CONCITSC | Consolidated City population Size Code |
| ANRC | Alaska Native Regional Corporation |
| AIANACE | American Indian/Alaska Native area (Census) |
| AIANAFP | American Indian/Alaska Native area (FIPS) |
| AIANACC | American Indian/Alaska Native area Class Code |
| COUSUBCE | MCD/CCD County Subdivision (Census) |
| COUSUBFP | MCD/CCD County Subdivision (FIPS) |
| COUSUBCC | MCD/CCD County Subdivision Class Code |
| COUSUBSC | MCD/CCD County Subdivision population Size Code |
| PlaceCE | Place (Census) |
| PlaceFP | Place (FIPS) |
| PlaceCC | Place Class Code |
| PlaceDC | Place Description Code |
| PlaceSC | Place population Size Code |
| PlaceF80 | 1980 FIPS place code |
| FMCD80 | 1980 FIPS MCD/CCD code |
| MSACMSA | MSA/CMSA 1990 |
| PMSA | PMSA 1990 |
| MSA95 | Metro Statistical Area (or CMSA), 95 |
| PMSA95 | Primary MSA, 1995 |
| NECMA95 | New England County Metro Area, 1995 |
| ZIP | Zip-code 1991 |
| HUC | Hydrological Unit (Watershed) |
| APUMA | PUMA code from 90 5% (A) Sample |
| BPUMA | PUMA code from 90 1% (B) Sample |
| VTD90 | Voting Tabulation District, 1990 |
| CZ80 | Commuting Zone, 1980 |
| CZ90 | Communting Zone, 1990 |
| LMA80 | Labor Market Area, 1980 |
| LMA90 | Labro Market Area, 1990 |
| BEALE | Beale urban-rural continuum code, 1993 |
| URBANRUR | Urban/Rural 1=Urban 2=Rural |
| URBAREA | Urbanized area |
| AREALAND | Area (land-001 square km) |
| AREAWAT | Area (water-001 square km) *No water blocks in data |
| Pop | Total Poplation |
| Pop0 | 17-Population under 18 years |
| Pop18 | 64-Population ages 18 to 64 |
| Pop18 | Population ages 18 and over |
| Pop65p | Population ages 65 and over |
| White | White Population |
| White17 | White Population under 18 |
| White18 | White Population ages 18 and over |
| Black | Black Population |
| Black17 | Black Population under 18 |
| Black18 | Black Population ages 18 and over |
| NatAm | Native American Population |
| NatAm17 | Native American Population under 18 |
| NatAm18 | Native American Population ages 18 and over |
| AsPac | Asia-Pacific Population |
| AsPac18 | Asia-Pacific Population ages 18 and over |
| AsPac17 | Asia-Pacific Population under 18 |
| Other | Other race Population |
| Other18 | Other race Population ages 18 and over |
| Other17 | Other race Population under 18 |
| HisPop | Hispanic Origin Population |
| HisPop17 | Hisp. Orig. Population under 18 |
| HisPop18 | Hisp. Orig. Population 18 and over |
| HIWhi | Hisp. Orig. White |
| HIBlk | Hisp. Orig. Black |
| HINAm | Hisp. Orig. Native American |
| HIAPc | Hisp. Orig. Asia-Pacific |
| HIOth | Hisp. Orig. Other race |
| HIWhi17 | Hisp. Orig. White under 18 |
| HIBlk17 | Hisp. Orig. Black under 18 |
| HINAm17 | Hisp. Orig. Native American under 18 |
| HIAPc17 | Hisp. Orig. Asia-Pacific under 18 |
| HIOth17 | Hisp. Orig. Other race under 18 |
| HIWht18 | Hisp. Orig. White ages 18 and over |
| HIBlk18 | Hisp. Orig. Black ages 18 and over |
| HINAm18 | Hisp. Orig. Native American ages 18 and over |
| HIAPc18 | Hisp. Orig. Asia-Pacific ages 18 and over |
| HIOth18 | Hisp. Orig. Other race ages 18 and over |
| NotHis | Not Hisp. Orig. Population |
| NHPop17 | Not Hisp. Orig. Population under 18 |
| NHPop18 | Not Hisp. Orig. Population 18 and over |
| NHWhi | Not Hisp. Orig. White |
| NHBlk | Not Hisp. Orig. Black |
| NHNAm | Not Hisp. Orig. Native American |
| NHAPc | Not Hisp. Orig. Asia-Pacific |
| NHOth | Not Hisp. Orig. Other race |
| NHWhi17 | Not Hisp. Orig. White under 18 |
| NHBlk17 | Not Hisp. Orig. Black under 18 |
| NHNAm17 | Not Hisp. Orig. Native American under 18 |
| NHAPc17 | Not Hisp. Orig. Asia-Pacific under 18 |
| NHOth17 | Not Hisp. Orig. Other race under 18 |
| NHWht18 | Not Hisp. Orig. White ages 18 and over |
| NHBlk18 | Not Hisp. Orig. Black ages 18 and over |
| NHNAm18 | Not Hisp. Orig. Native American ages 18 and over |
| NHAPc18 | Not Hisp. Orig. Asia-Pacific ages 18 and over |
| NHOth18 | Not Hisp. Orig. Other race ages 18 and over |
| HU | Total Housing Units |
| HUPer | Total Persons in Occuped HU |
| OccHU | Occupied Housing Units |
| OwnOccHU | Owner Occupied HU |
| RntOccHU | Renter Occupied HU |
| HU1 | HU with 1 unit Detached or Attached |
| HU2-9 | HU with 2 to 9 units in structure |
| HU10 | HU with 10 or more units structure |
| MeanRoom | Mean number of Rooms in Housing unit |
| MeanVal | Mean value of owner occupied housing |
| MeanRent | Mean Contract Rent in Renter Occ Housing paying cash rent |
| HU1Pls | Total HU with 1.01 or more persons per room |
| RnHU1Pls | Rental HU with 1.01 or more persons per room |
| OwHU1Pls | Owner Occupied HU with 1.01+ persons per room |
| HU1Per | Occupied HU with 1 person households |
| HUFamNS | Occ. Family HU with No Spouse present and 1+ child 0-17 |