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About Annual Meeting
IPUMS-USA is in the process of creating and releasing complete count U.S. decenial census microdata from 1790-1940. This project is only possible because of donations of digitized data from Ancestry.com and FamilySearch.org, and when the project is complete, this will be our largest microdata collection. Researchers can currently obtain coded and harmonized complete count data for 1850, 1880, and 1940 from the IPUMS extract system. To access this data and additional information about the IPUMS data, go to usa.ipums.org.