Current Population Survey microdata including basic monthly surveys and supplements from 1962 to the present.
World's largest collection of census microdata covering nearly 100 countries, contemporary and historical.
The Demographic and Health Survey program is continually collecting and releasing new data; at this writing, nineteen countries are collecting or processing data for standard DHS surveys. Researchers want the latest data for countries of interest, as soon as those data become available. To minimize the wait between the original DHS data release and the release of integrated data, IPUMS DHS is now releasing data multiple times a year.