U.S. Census and American Community Survey microdata from 1850 to the present. Learn More about the IPUMS USA project
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Current Population Survey microdata including basic monthly surveys and supplements from 1962 to the present. Learn More about the IPUMS CPS project
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World's largest collection of census microdata covering over 100 countries, contemporary and historical. Learn More about the IPUMS International Project
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Health survey data for Africa and Asia, including harmonized data collections for Visit the IPUMS DHS site and Visit the PMA site. Learn More about the IPUMS Global Health Projects
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Tabular U.S. Census data and GIS boundary files from 1790 to the present. Learn More about the IPUMS NHGIS Project
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Tabular and GIS data from population, housing, and agricultural censuses around the world. Learn More about the IPUMS IHGIS Project
Find additional spatial population & environmental data in IPUMS Terra.
Historical and contemporary time use data from 1930 to the present. Learn More about the IPUMS Time Use Projects
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Historical and contemporary U.S. health survey data from Visit the IPUMS NHIS site (1963-present) and Visit the IPUMS MEPS site (1996-present). Learn More about the IPUMS Health Surveys Projects
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Survey data on the science and engineering workforce in the U.S. from 1993 to the present. Learn More about the IPUMS Higher Ed Project
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Mapping Block-Level Segregation: The Twin Cities’ Black Population, 1980-2010
The most spatially precise U.S. census data are block-level tables, summarizing population and housing characteristics for millions of blocks throughout the country. IPUMS NHGIS provides block-level tables for the 1970 to 2010 decennial censuses as well as block boundary files for 1990, 2000 and 2010. This collection is set to grow substantially in the next few years as NHGIS adds new 2020 census block data and as we continue with a new major initiative to construct 1980 and 1970 block boundary files, opening up new possibilities for high-precision spatial analysis across a longer time span.
To demonstrate some of the potential value of this expanding collection, we use NHGIS block data, including some not-yet-released 1980 block boundaries, to explore the recent history of racial segregation and integration in the Black population of the Twin Cities of Minneapolis and St. Paul, Minnesota, from 1980 to 2010. We present the block data in an interactive map along with data on early-20th-century racial covenants and the “redlining” zones of the Home Owners’ Loan Corporation (HOLC), recently published by the Mapping Prejudice and Mapping Inequality projects.
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