World Christian Database

Updated to 2015 plus documentation revision.

The core religious data of the World Christian Database has been updated from mid-2010 to mid-2015.

Estimates for the number of religionists in every country of the world are now reconciled with the United Nations population projections for mid-2015. The update includes statistics on all world Religions as well as the Peoples and Country tables, and preliminary data for Cities and Provinces.

Unless labelled otherwise, all data in WCD now refer to 2015.

Note that Christian denominations and communions remain labelled as AD 2010 and will remain so until the first estimates for 2015 denominations become available. Also, note that religions by province for 2015 is preliminary data and full reconciliation of religions in the Province table with the Country tables should follow next quarter.

New projections of religious adherents for 2020, 2025, 2030 and 2050 are also included in this update.

Revised methodology document
The Methodology of the World Christian Database document has been revised to include material from Todd M. Johnson and Brian J. Grim, The World’s Religions in Figures: An Introduction to International Religious Demography (Oxford: Wiley-­-Blackwell, 2013).