The World Religion database is updated twice a year, generally in January and July.

Population update
04 Jan 2008

latest population revisions from the United Nations

Data has been updated to reflect the latest population revisions from the United Nations.

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


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.


Historical and current census data on religion by country.


A repository of historical data, including surveys.