Integrated Public Use Microdata Series

Topic/focus: Demographics
Year(s): 1850 - 2010
Source: Minnesota Population Center, University of Minnesota
Study and sample characteristics: Microdata sample of census data
Universe: Census participants
Variables: n/a
Access: Registration required
Cost: Free
Key web links: Minnesota Population Center
Primary Institutional Contact: EDRC Coordinator (

Summary: The Integrated Public Use Microdata Series (IPUMS-USA) consists of more than fifty high-precision samples of the American population drawn from fifteen federal censuses and from the American Community Surveys of 2000-2010. IPUMS is not a collection of compiled statistics; it is composed of microdata. Each record is a person, with all characteristics numerically coded. In most samples persons are organized into households, making it possible to study the characteristics of people in the context of their families or other co-residents. IPUMS-International is the world's largest collection of publicly available individual-level census data. IPUMS-International integrates samples from population censuses from around the world taken since 1960. IPUMS-CPS is an integrated set of data from the March Current Population Survey (CPS), beginning in 1962 and continuing until the present. This harmonized dataset is also compatible with the data from the U.S. decennial censuses that are part of the IPUMS-USA. Researchers can take advantage of the relatively large sample size of IPUMS-USA at ten-year intervals and fill in information for the intervening years using IPUMS-CPS.