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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.

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Data VisualizationOctober 1, 2013

Calculate the Size of the U.S. Jewish Population

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Polling and AnalysisMay 17, 2013

The Religious Affiliation of U.S. Immigrants: Majority Christian, Rising Share of Other Faiths

A Pew Research Center report looks at how the religious makeup of legal immigrants to the U.S. has changed over the past 20 years. While Christians continue to make up a majority of new legal permanent residents, a growing share belong to other faiths

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Demographic StudyDecember 18, 2012

The Global Religious Landscape

A country-by-country analysis of data from more than 2,500 censuses, surveys and population registers finds that 84% of adults and children around the globe are religiously affiliated. The study also finds that the median age of two major groups – Muslims (23 years) and Hindus (26) – is younger than the world’s overall population (28), while Jews have the highest median age (36).

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Multi-section reportsOctober 9, 2012

“Nones” on the Rise

The number of Americans who do not identify with any religion continues to grow at a rapid pace. One-fifth of the U.S. public – and a third of adults under 30 – are religiously unaffiliated today, the highest percentages ever in Pew Research Center polling.

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InteractivesDecember 19, 2011

Quiz: How much do you know about Christianity around the world?

A comprehensive demographic study finds that there are 2.18 billion Christians of all ages around the world, representing nearly a third of the estimated 2010 global population of 6.9 billion. Christians are also geographically widespread, and no single region can indisputably claim to be the center of global Christianity.

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InteractivesDecember 19, 2011

Map: Global Christianity

A comprehensive demographic study finds that there are 2.18 billion Christians of all ages around the world, representing nearly a third of the estimated 2010 global population of 6.9 billion. Christians are also geographically widespread, and no single region can indisputably claim to be the center of global Christianity.

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Demographic StudyDecember 19, 2011

Global Christianity – A Report on the Size and Distribution of the World’s Christian Population

A comprehensive demographic study finds that there are 2.18 billion Christians of all ages around the world, representing nearly a third of the estimated 2010 global population of 6.9 billion. Christians are also geographically widespread, and no single region can indisputably claim to be the center of global Christianity.