Updates

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

Population update

01 Oct 2009

latest population revisions from the United Nations

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

The number of religionists in every country are reconciled with each biennial revision of the population data produced by the United Nations population division.

More info...

Survey results added

01 Jul 2009

a further 360 surveys

The World Religion Database has added analyzed results from a further 360 surveys and data sources covering many countries and years:

38 Afrobarometer Surveys (province level data)
202 World Values Surveys (country level data)
119 country-level Muslim percentages for 1988 from the Population Reference Bureau
and the 2008 "Pew Religious Landscape Survey" for the USA (province level data)

More info...

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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.