Contains “references to published membership/adherent statistics and congregation statistics for over 4,200 religions, churches, denominations, religious bodies, faith groups, tribes, cultures, movements, ultimate concerns, etc.”

Provides longitudinal data, showing religious identification statistics in the U.S. from 1990-current.

Provides data on American and international religion, allowing you to generate national profiles, maps, church membership overviews, denominational heritage trees, tables, charts, and other summary reports.

Provides primary research through its five divisions with a vision of partnering with Christian ministries to affect a spiritual transformation in the United States.

stastistics from the United Nations on population by religion, sex and urban/rural residence

Provides information on world religions, Christian denominations, and people groups. Extensive data is available on 9,000 Christian denominations, 13,000 ethnolinguistic peoples, as well as data on 5,000 cities, 3,000 provinces and 238 countries.

The Pew Center is nonprofit, nonpartisan group that conducts independent research on a variety of cultural issues that intersect with religion.