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1990 Demographic Profile Generator (U.Mo.-St.Louis)

Search for state, county, metropolitan area, place, tract, block group, or zip code by its geographic code
Table provides basic demographic information, including population, race, age, educational attainment, household income, housing value, and rent
Especially valuable for its listing of metropolitan area, county, and place codes at the bottom of the page

Census Tract Locator tools

American Factfinder (Census Bureau)
- Use the Maps/Reference Maps section of American Factfinder
- Change geography, then search by street address, to determine Census tract, block group and block number of 2000 Census information

Federal Information Processing Standards Codes (NIST)

State, county, and place geographic codes used in the Census
Arranged by state and place with county codes also given
For county codes only, use Mable/GEOCORR; Source=County; Target=Entire Universe; Weight=population; request CSV or file with "names and codes"

Geographic Areas Reference Manual

Describes in detail the geographic concepts used in 1990
Separate chapters on state groupings into regions, American Indian Native Areas, county subdivisions, census tracts, voting districts
Each chapter gives a simple illustration (e.g. how a census tract is split, the 1850 census regions, etc.)

MABLE/GEOCORR Geographic Correspondence Engine: 2000

Create geographic correspondence tables between two types of 2000 Census geographies
Examples: all of the tracts in a zip code, all of the zip codes in a tract; all of the secondary school districts in a county
Does not compare 1990 and 2000 geocodes but there is a separate 1990 index available from this site
Codes include: state, county, city, MSA, census tract, block group, zip code, Congressional District and Public Use Microdata Areas

Metropolitan Area Definitions

Historical Metropolitan Statistical Area Definitions
- Alphabetic lists of Metropolitan Statistical Areas and Standard Metropolitan Statistical Areas with component counties
- June 30, 1999 (2000 Census), June 30, 1993, June 30, 1990 (1990 Census), June 30, 1983, and June 30, 1981 (1980 Census)

Public Use Microdata Areas (PUMAS) for Michigan: 1990 (UMich/Brandt)

PUMAs are data analysis areas below the state level
Information includes numerical code for the PUMA, component geographic areas and their population, state, county, place, and census tract codes as applicable

Public Use Microdata Areas Maps: 1990 (IPUMS)