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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.

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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.