NOTE! Data and statistics can often be found in journal articles, so don't forget to search article databases.
A gateway to statistics collected by United States federal agencies.
ICPSR is the world's largest collection of digital social science data covering topics from sociology, political science, economics, demography, education, childcare, health care, crime, minority populations, aging, terrorism, substance abuse, mental health, public policy, and international relations.
Note: First-time users will be asked to create an ICPSR MyData account; thereafter, you will need your email address and password to download data. Assistance in locating, accessing and analyzing ICPSR data is available; contact personnel are listed on the ICPSR Help pages.
Dissertations are a good place to get oriented on a topic and find reviews of the most current literature.