The Census Bureau has not yet announced a release date for the 2025 ACS 1-year PUMS data. IPUMS will process the data promptly once they are available.

Data Format and Structure (help)

Data Format

If you choose the "Fixed-width text (.dat)" data format, you will additionally receive Stata, SPSS, and SAS syntax files to load your fixed-width extract data file. Alternatively, you can receive your data in one of the formats listed below.






Data conversion supplied by Stat/Transfer

Data Structure
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