The Census Bureau’s American Community Survey (ACS) Public Use Microdata Sample (PUMS) files enable data users to create custom estimates and tables, free of charge, that are not available through ACS pretabulated data products. The ACS PUMS files are a set of records from individual people or housing units, with disclosure protection enabled so that individuals or housing units cannot be identified.
The Census Bureau produces ACS 1-year and 5-year PUMS files. These files are accessible using the microdata access tool on data.census.gov and the Census Bureau's FTP site. Only selected geographic areas are identified in the ACS PUMS, including Region, Division, State, and Public Use Microdata Areas (PUMAs). Of these, PUMAs are the most detailed geographic areas available.
Accessing PUMS Data
Access ACS Public Use Microdata Sample (PUMS) data available through the the File Transfer Protocol (FTP) site and through data.census.gov.
How to Use PUMS on data.census.gov
Learn more about how to use the microdata access tool on data.census.gov with the ACS Public Use Microdata Sample (PUMS) files.
Learn more about how to work with ACS Public Use Microdata Sample (PUMS) files with resources such as the ReadMe, Data Dictionaries, Code Lists, and more.