Updates

The World Christian database is updated twice a year, following research cycles.

Updated to 2010
01 Jan 2010

WCD is now updated from mid-2005 to current data projections for mid-2010...


The core religious data of the World Christian Database has been updated from mid-2005 to mid-2010.

This means that estimates for the number of religionists in every country of the world are now reconciled with the United Nations population projections for mid-2010. The update includes statistics on all world religions as well as the peoples (first round of projections), cities, provinces and country tables.

Unless labelled otherwise, all data in WCD now refer to 2010 and this update includes two new data points (1950 and 2010) which have been added to the religious change over time tables for all countries.

Note that Christian denominations and communions remain labelled as AD 2005 until the next quarterly update in April when the first estimates for 2010 denominations will be added, along with a second round of reconcilliation of 2010 data in the Peoples table.

Included in this update are new projections of religious adherents for 2025 and 2050.


Population update
01 Oct 2009

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


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

This update includes the latest re-reconciliation of statistics on all Christian denominations and world religions including Peoples and Provinces.

New projections of religious adherents for 2025 and 2050 proceed from this.


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Religions

Data on 18 categories of religion, including non-religious, by country, province, and people.

Countries and regions

Data on all religions, Christian activities, and trends.

Denominations

Membership data, year begun, and rates of change.

Cities & provinces

Population and religion data on all major cities & provinces.

Peoples & languages

Detailed information covering religion, culture, and geography.

Archive

A repository of historical data, including a chronology of Christianity from the 1st to 21st centuries.