Integrated Public Use Microdata Series
International

IPUMS-International is an integrated series of census microdata samples from 1960 to the present. At this time, the series includes 111 samples drawn from 35 countries, with more scheduled for release in the future.

Integrated Public Use Microdata Series
USA

IPUMS-USA is an integrated series of representative samples drawn from the U.S. censuses of 1850 to 2000 and the Puerto Rican censuses of 1910 to 2000. IPUMS-USA also includes American Community Survey (ACS) data from 2000 to 2006.

Integrated Public Use Microdata Series
CPS

IPUMS-CPS provides integrated data and documentation from the March Current Population Survey (CPS) from 1962 to 2006. The harmonized CPS data is also compatible with the data from IPUMS-USA.

"IPUMS est un projet absolument extraordinaire...époustouflante [mind-blowing]!"
Liens-Socio (French portal for the social sciences)

"One of the great archival projects of the past two decades"
Journal of American History

:: Data Project News ::

New IPUMS-International Data

IPUMS-International recently added 32 new samples from 15 countries. The new data release also includes approximately 100 new internationally harmonized variables and 2000 unharmonized variables specific to individual samples.

more information >>

New IPUMS-USA Data

IPUMS-USA recently added 14 new samples, including data from the Puerto Rican censuses of 1910-2000 and the Puerto Rican Community Survey. The new data release includes nearly 100 new variables, along with improvements to every existing IPUMS sample.

more information >>

Use it for GOOD - never for EVIL

North Atlantic Population Project

The North Atlantic Population Project provides access to late-nineteenth century complete-count census microdata from Canada, Great Britain, Iceland, Norway, Sweden, and the United States.

NAPP Homepage >>

National Historical
Geographic Information System

The National Historical Geographic Information System (NHGIS) provides U.S. aggregate census data and electronic boundary files for tracts and counties between 1790 and 2000.

NHGIS Homepage >>

Integrated Health Interview Series

The Integrated Health Interview Series (IHIS) provides integrated data and documentation from the National Health Interview Survey (NHIS). IHIS currently contains over 1000 integrated variables covering the years 1969 to 2006.

IHIS Homepage >>

Integrated Public Use Microdata Series International

Integrated Public Use Microdata Series USA

Integrated Public Use Microdata Series CPS