Data

ICPSR maintains a data archive of more than 500,000 files of research in the social sciences. It hosts 16 specialized collections of data in education, aging, criminal justice, substance abuse, terrorism, and other fields.

IPUMS provides census and survey data from around the world integrated across time and space. IPUMS integration and documentation makes it easy to study change, conduct comparative research, merge information across data types, and analyze individuals within family and community contexts. Data and services available free of charge.

The GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings. The GSS takes the pulse of America, and is a unique and valuable resource. It has tracked the opinions of Americans over the last four decades.

Google's dataset search engine enables users to search 25 million publicly available datasets. The search tool includes filters to limit results, and the results include the dataset description and citation.

Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world. They conduct public opinion polling, demographic research, content analysis and other data-driven social science research.

The World Bank provides free and open access to a comprehensive set of data about development in countries around the globe, together with other datasets cited in the data catalog. Broader access to these data allow policymakers and advocacy groups to make better-informed decisions and measure improvements more accurately. They are also valuable tools to support research by journalists, academia and others, broadening understanding of global issues.