Annual Census Bureau comprehensive publication of summary statistics on social, political, and economic topics of the United States. Includes data from many federal government agencies. Coverage: 1878-2012.
The Inter-University Consortium for Political & Social Research (ICPSR) provides research datasets covering a wide range of social science areas. Each study's dataset provides documentation (e.g. codebook), and a bibliography of published articles that used the data. Data offered in many formats. Must create an ICPSR account to download data. Coverage: 1700s-present.
Visualize and map thousands of socioeconomic variables covering the United States (local to national). Create reports on specific Census geographies. Download reports, data, and maps. Coverage: 2000-present.
It uses its videos and data visualization tools to help people better understand statistics and other information about social, economic and environmental development at local, national and global levels.