Christianity 2015: Religious Diversity and Personal Contact

Every year in the International Bulletin of Missionary Research we present an annual snapshot of global Christianity, which can be downloaded for free here. The table provides a statistical overview of the world’s 2.4 billion Christians and their activities. Click here for the corresponding methodological notes

Most Recent Newsletter

Check out the first issue of the Center's newsletter, The Inquiry, available for free PDF download here (views best in Safari or Firefox).

The Center's Library

The Center for the Study of Global Christianity, located on Gordon-Conwell Theological Seminary's main campus in South Hamilton, Massachusetts, houses a research library with over 10,000 volumes. The texts cover a number of topics, including both the history of Christianity and general history (at the global, regional, and country-specific levels), world religions, people (ethnic) groups, language and linguistics, missions and evangelism, art and media (especially Christian art), statistics, and the social sciences. Click here for more information. For more information about the library or to arrange a visit, please contact the Center directly at 978-468-2750 or

Martyrdom Situations

One of our most highly-cited figures is the average number of Christian martyrs around the world every year. The World Christian Database hosts a table outlining some key martyrdom situations from 2000-2010. The table is available for free here (and the methodology of counting martyrs is also available here).

Least Evangelized Peoples

The World Christian Database houses a list of the world's largest unevangelized peoples, which includes 247 peoples over 1 million in population in the year 2015 and less than 50% evangelized. Click here for a free download of the table.

Status of Global Christianity, 1970-2020: Society, Religion, and Mission

The Center for the Study of Global Christianity released a report in 2013 outlining trends in global Christianity and mission from 1970 to 2020. The 92-page report is available as a free download here.


The Center for the Study of Global Christianity adheres to rigorous methodologies in order to arrive at the most accurate and reliable data. 

World Christian TrendsWorld Christian Trends: Interpreting the annual Christian megacensus, AD 33-AD 2001

Click here to read an excerpt from World Christian Trends by Dr. David B. Barrett and Dr. Todd M. Johnson describing martyrdom through the Christian age. This chapter was cited in the January 2011 issue of the International Bulletin of Missionary Research.

Global Diagrams

Global diagrams are one-page sheets providing detailed measurements of a specific theme. 10 of the 74 global diagrams from World Christian Trends are provided here in pdf format.

GD-04. World Christian Trends across 22 centuries and companion graph 7-1
GD-15. Missionaries Ever
GD-16. Martyrdom
GD-18. Human Need
GD-23. Geopolitical-Religious Blocs
GD-24. Resources for Mission
GD-30. Enumerating Christian Traditions
GD-34. Status of World Evangelization - Worlds A, B and C
GD-41. Global Religious Change - Annual Gains and Losses
GD-62. Deployment of Missionaries - Where should foreign missionaries work?

Global Commentary

World Christian Trends 2005 Presented at IFMA/EFMA, St. Louis, September 2004 by Todd M. Johnson

Overview of World Evangelization, 2005-2025, Report for Lausanne 2004 Forum on World Evangelization

Global Maps

GM-04. Trends In Evangelization and Christianization in Worlds A, B, and C countries, AD 2000.

Global Tables and Lists

Table 1-2. Global Adherents of the world’s 19 major distinct religions
Part 11. Global Top Ten lists on 145 major missiometric categories

Center for the Study of Global Christianity

130 Essex St. | South Hamilton, MA 01982
Phone: 978-468-2750 | Fax: 978-468-1549 |