Video: How much ‘religious switching’ is there in the U.S.?
35% of U.S. adults no longer identify with the religion in which they were raised – that’s about 90 million people who have changed their religious identities.
Numbers, Facts and Trends Shaping Your World
Religious Identity & Affiliation
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Religious Identity & Affiliation
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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 people identify with each religious group and what percent each made up in 201 countries and territories, and by region, in 2010 and 2020.
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Video: How religious are young Americans today?
Young adults today are less religious than older adults by traditional measures. But when it comes to spirituality, the differences are smaller.
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Video: How common are spiritual beliefs in the U.S.?
In this video, we dive into the impact spirituality has on Americans and how it overlaps with and differs from religiousness.
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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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Video: Religion and Spirituality in America
After years of decline, the U.S. Christian share has been relatively stable since 2019, while the rise in the share of religious “nones” has slowed – at least for now.
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Religious Landscape Study: Database
The Religious Landscape Study is a comprehensive survey of more than 35,000 Americans’ religious identities, beliefs and practices that’s been conducted in 2007, 2014 and 2023-24. Pew Research Center.
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Decline of Christianity in the U.S. Has Slowed, May Have Leveled Off
After years of decline, the U.S. Christian share now shows signs of leveling off. The new Religious Landscape Study explores trends in identity, beliefs and practices.
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Faith on the Hill
Christians will make up 87% of voting members in the Senate and House of Representatives, combined, in the 2025-27 congressional session.
