Statistics

Census conducted by the Public Religion Research Institute (PRRI).

Free source of online information related to American and international religion. Features include national profiles, GIS maps, church membership overviews, denominational heritage trees, tables, charts, and other summary reports.

The Center for Applied Research in the Apostolate (CARA) conducts social scientific studies about the Catholic Church.

Conducts studies and present summaries of current religion research by Hartford Institute for Religion Research faculty as well as the research done by other sociologists of religion.

The U.S. Department of State submits an annual Report to Congress on International Religious Freedom in compliance with section 102(b) of the International Religious Freedom Act of 1998 (P.L. 105-292), as amended.

This project is carried out by the Pew Research Center with generous funding from The Pew Charitable Trusts and the John Templeton Foundation. Includes analysis of religious change and its impact on societies around the world. This interactive website is still in development; over time, it will grow to include additional data from the Pew Research Center’s demographic studies and public opinion surveys in many more countries.

Pew Research Center. Browse by publications, topics, interactives and data & resources.

Pew Research Center. 2014 study surveyed more than 35,000 Americans from all 50 states about their religious affiliations, beliefs and practices, and social and political views.