These documents were prepared by the Congressional Research Service (CRS). CRS serves as nonpartisan shared staff to congressional committees and Members of Congress. It operates solely at the behest of and under the direction of Congress. Information in a CRS Report should not be relied upon for purposes other than public understanding of information that has been provided by CRS to Members of Congress in connection with CRS’s institutional role. CRS Reports, as a work of the United States Government, are not subject to copyright protection in the United States. Any CRS Report may be reproduced and distributed in its entirety without permission from CRS. However, as a CRS Report may include copyrighted images or material from a third party, you may need to obtain the permission of the copyright holder if you wish to copy or otherwise use copyrighted material.
We’re publishing reports by Congress’s think tank, the Congressional Research Service, which provides valuable insight and non-partisan analysis of issues of public debate. These reports are already available to the well-connected — we’re making them available to everyone for free.
Archives of social science data for research and instruction.
The Inter-university Consortium for Political and Social Research (ICPSR), established in 1962, maintains and provides access to a vast archive of social science data for research and instruction, and offers training in quantitative methods to facilitate effective data use.
Social Explorer provides access to current and historical census data and demographic information. Create maps and reports to better illustrate, analyze and understand demography and social change.
Note: Social Explorer has developed a new libguide. To see the new libguide, you can go this link here
Key content in Social Explorer includes: over 40 billion data elements, 200,000 variables; 18,000 interactive maps; the entire US Census from 1790 to the present as it is available; annual updates from the American Community Survey; InfoGroup data on religious congregations; Religious Congregations and Membership Study; and Carbon Emissions Data. Users can create custom maps, download data, and export, save, and print maps and reports.
Datasets of opinion polls conducted in the U.S. from 1935 to the present. See also Roper Center for Public Opinion Research.
iPOLL is a comprehensive database of 500,000 questions and answers asked in opinion polls in the US since 1935. For US data, iPOLL permits you to locate questions (and the answers of the full sample) and then to link to the data files and run secondary analysis. Support for these services is available from the Roper Center.