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Geographic Resources

Lists and Geographic Codes

Shapefiles for Mapping

Bridge Files

  • USPS ZIP Code Crosswalk Files (HUD): These crosswalk files, which link ZIP Codes to multiple different geographies—from census tracts to congressional districts—are updated quarterly.

  • ZIP Code Tabulation Area to County Bridge (StatsAmerica): ZIP Code Tabulation Areas (ZCTAs) were assigned to both Census and BEA counties based on population-weighted ZCTA centroids. This bridge is based on TIGER 2018 shapefiles from the U.S. Census Bureau, and the centroids were weighted based on Census 2010 block-level population.

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