- The Center on Religion & the Professions’ Collection of Survey and Poll Research, 2000-present
- American Religious Identification Survey (ReligionLink)
- Pew Forum on Religion and Public Life
- Adherents.com
- Association of Religion Data Archives
- Pew Forum on Religion & Public Life Datasets
- The Barna Group
- Gallup religion polls
- Ellison Research
- Lifeway Research
- Spirituality in Higher Education
- FACT Faith Communities Today
- Religion statistics by country
- University Libraries religion statistics links
- Librarians’ Internet Index – religion and statistics
- The Pluralism Project – statistics by tradition
- Statistics on Religion Resources (ReligionSource)
- Religion and Divorce statistics
- Statistics about Black Americas – Religion
- Percentage of population claiming no religion by state (StateMaster)
- Table of Statistics on Religious Affiliations in the Americas and the Iberian Peninsula
- Religion and belief in the UK: some surveys and statistics (British Humanist Association)
- Data Pathfinders: Statistics on Religion (GIMSS), Religious Data: Statistics for Researchers