Demographic StudyApril 2, 2015

The Future of World Religions: Population Growth Projections, 2010-2050

As of 2010, nearly a third of the world’s population identified as Christian. But if demographic trends persist, Islam will close the gap by the middle of the 21st century.

DatabaseApril 2, 2015

Religious Composition by Country, 2010-2050

Explore the estimated religious composition of 198 countries and territories for 2010 to 2050.

© Bombzilla/Image Source/Corbis; photo illustration by Bill Webster/Pew Research Center
Multi-section reportsOctober 1, 2013

A Portrait of Jewish Americans

American Jews overwhelmingly say they are proud to be Jewish and have a strong sense of belonging to the Jewish people, but their identity is also changing: 22% of American Jews now say they have no religion.