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
Measuring Marriage & Divorce among Same-Sex Couples
Crosswalks for Tabular Data
MABLE Geocorr [Geographic Correspondence Tool]
This is a geographic correspondence tool or crosswalk across various geographies such as Congressional Districts, counties, places, zip codes, census tracts, block groups, voting districts, and school districts. This is currently available for 1990, 2000 and 2010.
PUMA to County Utility (American FactFinder)
This utility takes PUMA-based output from American FactFinder and generates county-based statistics using the correspondence between PUMAs and counties. The following example illustrates the use of this tool.
Note that PUMAs are being redrawn based on the 2010 Census. The current equivalency file is based on 2000 Census counts and will not be as accurate as it was earlier in the decade.
Census Tract Relationship files - Decade to Decade: 1970 - 2010
These are files that show the crosswalk from one census to the next for census tracts. There are files for 1970 to 1980; 1980 to 1990; 1990 to 2000; and 2000 to 2010.
Another source for this (as a finished product) are the Neighborhood Change Database and/or the Longitudinal Tract Database. In both of these cases, the data are normalized to the most recent year and across multiple decades instead of decade to decade.