The World Religion database is updated twice a year, generally in January and July.
The 10 countries of the Association of Southeast Asian Nations range from vast majorities
Another in a series of reports on global religions by Pew Research Center using WRD data
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.