The World Religion database is updated twice a year, generally in January and July.
a set of indexes of religious freedom, and Religions Over 1 Percent by province
The base year of WRD has now moved from mid-2005 data to current projections for mid-2010
All major world religions, available by geographic region and people groups.
Comprehensive country religious makeup, demographics, and trends.
Religious Diversity Index (RDI) and counts of religions over 10%, over 5%, and over 0.5%.
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.