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Topics
Data & Maps
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Resource Library
Geography & ACS
Geography plays an important role in all Census Bureau activities, including supporting the American Community Survey (ACS). It is the framework by which the Census Bureau collects and publishes social, economic, housing, and demographic data. Geography contributes to, and is involved in, ACS sampling, data collection, weighting, and data tabulation activities.
Check out our handbook, Geography and the ACS: What Data Users Need to Know, to learn more about an overview of geographic areas for which ACS data are available, special considerations in working with spatial data, and links to tools and other resources that data users can use to map ACS data.
Areas Published
View a table outlining the number of geographic areas receiving American Community Survey data for each data release.
Geography Boundaries by Year
View the geographic boundaries (or "vintages") for the geographic areas used in the American Community Survey.
Reference Materials
View detailed lists and maps of geographic areas published by vintage year.
Concepts & Definitions
Discover key concepts, definitions, and resources to understand American Community Survey estimates at different geographic levels.
Geography Tools
Explore our geography tools to discover mapping capabilities with ACS data.
Page Last Revised - January 31, 2023
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