Why is Buddhism shrinking worldwide?
The global population of Buddhists shrank by roughly 5% between 2010 and 2020, the sole major religious group to decline.
Religious Demographics
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Religious Demographics
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5 facts about Buddhists in the United States
Today, there are millions of Buddhists in the United States, including many who were born to Buddhist families and others who converted into the religion.
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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.
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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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Religious Diversity Around the World
Singapore is the most religiously diverse country, and Yemen the least, as of 2020. The U.S. ranks first among nations with large populations.
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Has there been a Christian revival among young adults in the U.K.? Recent surveys may be misleading
Despite the widely recognized decline of Christianity in the U.K., there have been persistent rumblings of a Christian resurgence.
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Catholicism Has Declined in Latin America Over the Past Decade
Growing numbers of Latin Americans are religiously unaffiliated, but belief in God remains high across the region.
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Striking findings from 2025
Here’s a look back at 2025 through 12 of our most striking research findings.
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Religion Holds Steady in America
Analysis of our polls and other data shows no clear evidence of a religious revival among young adults. Read more about religiousness by age and gender.
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Many religions are heavily concentrated in a few countries
Half of the world’s population lives in just seven countries. But some of the world’s religious groups are even more concentrated than that.
