ICPSR: Interuniversity Consortium for Political & Social Research ICPSR, the world's largest collection of digital social science data, maintains a data archive of more than 250,000 files of research in the social and behavioral sciences. ICPSR data cover sociology, political science, economics, demography, education, child care, health care, crime, minority populations, aging, terrorism, substance abuse, mental health, public policy, international relations, and more. First-time users will be asked to create an ICPSR MyData account; thereafter, you will need your email address and password to download data.