IPUMS USA collects, preserves and harmonizes U.S. census microdata and provides easy access to this data with enhanced documentation.


IPUMS CPS harmonizes microdata from the monthly U.S. labor force survey, the Current Population Survey (CPS), covering the period 1962 to the present.


IPUMS International is dedicated to collecting and distributing census data from around the world.


IPUMS Global Health provides integrated international health survey data at no cost for research and educational purposes from the DHS and PMA2020 data series.


The National Historical Geographic Information System (NHGIS) provides easy access to U.S. summary tables along with GIS-compatible boundary files for years from 1790 through the present.


IPUMS Terra integrates population and environmental data across disciplinary scientific domains, enabling research into dramatic transformations of human populations, the environment, and their interactions.


IPUMS Time Use projects provide free individual-level time use data for research purposes. The data extract systems make it easy to create data sets containing time use and other variables a user needs.


IPUMS Health Surveys provide free survey data containing self-reported health and health care access information from the NHIS and MEPS data series.


IPUMS Higher Ed disseminates data from the Scientists and Engineers Statistical Data System (SESTAT), the leading surveys for studying the STEM workforce in the U.S.


IPUMS Abacus provides a mobile-friendly interface for quickly generating cross tabulations of IPUMS USA data.


The ipumsr package helps import IPUMS extracts into R. If you are trying to run code and having trouble, it will be easier to answer your question if you follow the principles of the tidyverse’s reprex. The one exception is that you should not upload your data, but a description of your extract would be helpful (include which samples, variables, file type, etc.).


Discussion about this site, its organization, how it works, and how we can improve it.


The IPUMS Team will post information about data updates, upcoming events, and other announcements in this category. Users are not able to create topics in this category but you can reply to posts to let us know how excited you are!