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THEO 251 - Global Christianity: Statistics

An examination of Christian religious change and its impact on societies around the world and focuses on the size and geographic distribution of the world’s Christian population.


Statistics on religion, like most other statistics, must be interpreted with a critical eye.  Most of the resources that you encounter in this guide will have a disclaimer explaining the collection method and nature of the data.  Be sure to read this section.


Statistics on World Chrisitianity

Christianity in a Global Context - Todd M. Johnson
Report on the demographic trends of global Christianity.

Spirit and Power - Pew Forum
A Pew study conducted in 2006 of Pentecostalism and related charismatic movements in 10 countries.

Comprehensive Sources

About Data Archives

Data archives contain raw data files that are used for secondary analysis in research. 
Data set files are usually downloaded and manipulated using statistical software such as SPSS or SAS.  Sometimes data archives will provide tools for online analysis as well.

Below is a selected list of data archives. 

Popular Resources

Statistical Information

Religious Bodies (U.S. Census Bureau)

The U.S. Census Bureau conducted 4 censuses of religious bodies from 1906-1936.  The adoptation of Public Law 94-521 prohibits the Census Bureau from asking mandatory questions about religious affiliations.  For a complete overview of Census Bureau publications about religion, please visit the Question & Answer Center topic Religion: Data Sources.

Subject Guide

Curt LeMay's picture
Curt LeMay
Library Director / Theological Librarian
The Archbishop Ireland Memorial Library
Mail # IRL
Office - 101 Ireland Library
Library Liaison for Theology
Telephone: 651-962-5451
Fax: 651-962-5460
Website / Blog Page

Religion -- US Stats

Major Research Organizations

Some of the major organizations involved in research on religion include:

See also this Library Research Guide