When citing the database please use the following form for a general citation:
Gina A. Zurlo, ed. World Christian Database (Brill, 2025).
For a specific citation in a publication with a table, or citing specific data points:
Gina A. Zurlo, ed. World Christian Database (Brill, accessed August 2025).
To contact a researcher, please go to our contact page.
Gina A. Zurlo is a Research Associate in World Christianity at Harvard Divinity School (Cambridge, MA, USA).
Her research interests include World Christianity, history, sociology of religion, and gender studies.
She is the co-author with Todd M. Johnson of the World Christian Encyclopedia, 3rd edition (Edinburgh University Press, 2019).
She has recently authored three books: 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 quantifying religion
and non-religion worldwide.