Buddhism’s Recent Decline in East Asia
Buddhism is the only major religion whose global population shrank between 2010 and 2020. Learn why it declined in East Asia, particularly in Japan and South Korea.
Size & Demographic Characteristics of Religious Groups
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Size & Demographic Characteristics of Religious Groups
Publications
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Which U.S. religious groups are most highly educated?
Hindus and Jews are much more likely to have a four-year college degree than Americans in other religious groups.
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If the U.S. had 100 people: Charting Americans’ religious affiliations
If the U.S. had 100 people, 62 would be Christians, including 40 Protestants, 19 Catholics, two Latter-day Saints and two who identify with other Christian groups.
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Islam was the world’s fastest-growing religion from 2010 to 2020
From 2010 to 2020, the number of Muslims increased by 347 million people to 2.0 billion people.
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How the Global Religious Landscape Changed From 2010 to 2020
Christians remain the largest religious group, and Muslims grew the fastest from 2010 to 2020. Read how the global share of Buddhists, Hindus, Jews and the religiously unaffiliated changed.
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Religious Composition by Country, 2010-2020
Find how many and what percent of people in 201 countries and territories identify with each religious group, and how diverse these places are as of 2010 and 2020.
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Around the World, Many People Are Leaving Their Childhood Religions
In many places surveyed, 20% or more of all adults have left their childhood religious group. Christianity and Buddhism have had especially large losses.
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10 facts about U.S. Catholics
Catholics are one of the largest religious groups in the United States, outnumbering any single Protestant denomination.
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The Religious Composition of the World’s Migrants
The globe’s 280 million immigrants shape countries’ religious composition. Christians make up the largest share, but Jews are most likely to have migrated.
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Religious Composition of the World’s Migrants, 1990-2020
Explore our interactive table showing the religious composition of immigrants around the globe and how it’s changed from 1990 to 2020.
