When citing the database please use the following form for a general citation:
Gina A. Zurlo and Todd M. Johnson, eds. World Christian Database (Leiden/Boston: Brill, 2025).
For a specific citation in a publication with a table, or citing specific data points:
Gina A. Zurlo and Todd M. Johnson, eds. World Christian Database (Leiden/Boston: Brill, accessed February 2025).
To contact a researcher, please go to our contact page.
Gina A. Zurlo is Co-Director of the Center for the Study of Global Christianity and her research focuses
on World Christianity, sociology of religion, and women’s studies. She is
also a Visiting Research Fellow at Boston University’s Institute on Culture, Religion and World Affairs,
where she edits the World Religion Database (Brill). Her most recent books include Global Christianity:
A Guide to the World’s Largest Religion from Afghanistan to Zimbabwe (Zondervan Academic, 2022), Women in
World Christianity: Building and Sustaining a Global Movement (Wiley-Blackwell, 2023), and From Nairobi
to the World: David B. Barrett and the Re-Imagining of World Christianity (Brill, 2023). She was named
one of the BBC’s 100 most inspiring and influential women of 2019 for her work in quantifying the
religious future. She is a Yang Visiting Scholar of World Christianity at Harvard Divinity School in
2023–2024.
Todd M. Johnson is the Paul E. and Eva B. Toms Distinguished Professor of Mission and Global Christianity
and Co-Director of the Center for the Study of Global Christianity at Gordon-Conwell Theological Seminary.
Johnson is visiting Research Fellow at Boston University’s Institute for Culture, Religion and World
Affairs working on a research project on international religious demography. He is co-editor of the
Atlas of Global Christianity (Edinburgh University Press) and co-author of the World Christian Encyclopedia
(Oxford University Press, 2nd ed.) and World Christian Trends (William Carey Library). He is co-editor
of the World Christian Database (Brill) and World Religion Database (Brill).