IPUMS CPS: Version 4.0

Sarah Flood, Miriam King, Steven Ruggles, and J. Robert Warren. Integrated Public Use Microdata Series, Current Population Survey: Version 4.0 [dataset]. Minneapolis, MN: University of Minnesota, 2015. https://doi.org/10.18128/D030.V4.0.


IPUMS-CPS is dedicated to integrating and disseminating microdata from the Current Population Survey (CPS). The CPS is a monthly U.S. household survey conducted jointly by the U.S. Census Bureau and the Bureau of Labor Statistics. IPUMS-CPS contains harmonized data from every Annual Social and Economic Supplement (ASEC) supplement from 1962 to the present and all other supplements from 1976 to present. In addition to the many of the variables included in census data (race and ethnicity, education, income, occupation, industry, migration, disability, and veteran status), IPUMS-CPS includes additional information on work and income, such as participation in welfare programs, job searching, barriers to looking for work, union membership, hourly wages, health insurance, and tax liability. In addition, monthly supplements supplemental for certain years include information on computer and Internet use, displaced workers, fertility, food security, job tenure, tobacco use, volunteer activities, voter registration, and work schedules. IPUMS-CPS data are available through an online data access system free of charge to registered users at cps.ipums.org.


Data are available by request to registered IPUMS-CPS users. Please contact ipums@umn.edu. Archived versions of the data have been stored in fixed format files with accompanying documentation and set-up files. The full data set has been broken into appropriate subsets reflecting the content and usage of the data.

Revision history

IPUMS-CPS data are continually revised. We archive annual snapshots and document changes between snapshots. The changes made to Version 4.0 before we archived Version 5.0 occurred between 4-11-2016 and 10-25-2017 on the current revisions page [https://cps.ipums.org/cps-action/revisions].