Updates

The World Religion database is updated twice a year, following research cycles.

87 new censuses

16 Oct 2026

The 2025 round of census data reporting is about to begin just as the 2020 round of census data is completed …

The 2020 round of census data analysis has been completed with results incorporated into these new 2025 religion estimates, with consequent adjustment of future projections. Percentages of each top level religion, as reported by the census, is also included for an additional 87 countries.

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Glossary update

29 Dec 2025

The glossary has been greatly simplified to include only terms most relevant to the database …

The glossary has been trimmed to include the terms most directly relevant to the database. Core data remains the same while work continues on recent census analysis.

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Religions

All major world religions, available by geographic region and people groups.

Geography

Comprehensive country religious makeup, demographics, and trends.

Religious diversity

Religious Diversity Index (RDI) and counts of religions over 10%, over 5%, and over 0.5%.

Contextual data

Population data by country, plus socio-economic, health, environment, and gender indicators.

Censuses

Historical and current census data on religion by country.