IPUMS-USA Harmonized data on people in the U.S. census and American Community Survey, from 1850 to the present.
IPUMS-International Harmonized data for 1960 forward, covering 544 million people in 238 censuses from around the world.
IPUMS-CPS Harmonized data on people in the Current Population Survey, every March from 1962 to the present.
North Atlantic Population Project Complete-count data from 1800s censuses of Canada, Great Britain, Germany, Iceland, Norway, Sweden, and the U.S.
National Historical Geographic Information System Tabular U.S. census data and GIS boundary files from 1790 to the present.
Integrated Health Interview Series Annual harmonized data on people in the U.S. National Health Interview Survey from the 1960s to the present.
American Time Use Survey-X Annual harmonized data from 2003 forward on how U.S. adults divide their time among activities.
Integrated Demographic and Health Series Demographic and Health Surveys integrated for analysis across time and space, 1980s forward.
Terra Populus Integrated data on population and the environment, from 1960 to the present.