World Christian Database: field definitions

Data source: Gina A. Zurlo, ed., World Christian Database (Leiden/Boston: Brill, 2026).

Table Field Description
province Area square km Area covered by Major Civil Division (United Nations’ term for the next level of administrative or political subdivision in a country immediately below nationwide level) in square kilometers in this province.
province Area square miles Area covered by Major Civil Division (United Nations’ term for the next level of administrative or political subdivision in a country immediately below nationwide level) in square miles in this province.
province Christians Number of Christians in this province in 2025.
province Christians % Christians as a percentage of this province's population in 2025.
province Country Country of this Province.
province Country code Four-letter abbreviation assigned to country for database purposes.
province Largest religion % Percentage of the largest religion of this province.
province Largest religion code Religion code of the largest religion of this province.
province Note Additional descriptive data for this province.
province Province Name of the Major Civil Division (United Nations’ term for the next level of administrative or political subdivision in a country immediately below nationwide level) as it is known to its inhabitants.
province Province Capital Name of Province's capital city if major Civil Division (United Nations’ term for the next level of administrative or political subdivision in a country immediately below nationwide level) has one.
province Province ID Unique province identifier (primary key) used by the database.
province Province Pop Province population in 2025 in each MCD (Major Civil Division-United Nations’ term for the next level of administrative or political subdivision in a country immediately below nationwide level).
province Province population % Province population in each MCD (Major Civil Division-United Nations’ term for the next level of administrative or political subdivision in a country immediately below nationwide level) as a percentage of the country's population.
version_2000_chronology Chronology sort Sorts entries within years.
version_2000_chronology Entry Chronology entry relating to this date.
version_2000_chronology Version 2000 Chronology ID Unique identifier (primary key) used by the database.
version_2000_chronology Year Year to which this entry applies.
version_2000_martyr_people Martyr Name Name of martyr. Abbreviations. abp = archbishop, bp = bishop, br = brother or monk (only from 1330 onward), Canter = Canterbury, ecu = ecumenical, fr = father (priest, only given here after 1516), Jerus = Jerusalem, met = metro = metrop = metropolitan, msgr = monsignor, patr = patriarch, sr = sister (nun; only given here since 1950). Initials after the first name/surname = Catholic order or congregation (e.g. SJ = Jesuit).
version_2000_martyr_people Note General note.
version_2000_martyr_people Version 2000 Martyr People ID Unique identifier (primary key) used by the database.
version_2000_martyr_people Version 2020 Country Country name as known in 2020.
version_2000_martyr_people Year Year of martyrdom.
version_2000_plan_summary Anglican Count of 'other' unlisted plans best identified with the Anglican megabloc.
version_2000_plan_summary Independent Count of 'other' unlisted plans best identified with the Independent megabloc.
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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.