See the latest Pew Research Center reports and data on the world’s largest religious group.
America’s Changing Religious Landscape
The Christian share of the U.S. population is declining, while the share of Americans who do not identify with any organized religion is growing. These changes affect all regions in the country and many demographic groups.
Religious Landscape Study
Explore the geographic distribution and demographics of America’s major religious groups.
Why Muslims are the world’s fastest-growing religious group
By 2050, they are expected to make up about three-in-ten of the world’s people, owing in part to relatively high fertility and low median age.
Europe projected to retain its Christian majority, but religious minorities will grow
The number of Christians in Europe is forecast to drop by about 100 million by 2050, while the share of Muslims and smaller religious minorities will increase.
Muslims expected to surpass Jews as second-largest U.S. religious group
If current demographic trends hold, by 2050, Muslims are projected to be more numerous in the U.S. than people who identify as Jewish on the basis of religion.
Christianity poised to continue its shift from Europe to Africa
The share of the world’s Christians in Europe will continue to decline while the percentage in sub-Saharan Africa will increase dramatically.
The Future of World Religions
If current demographic trends persist, Christians will remain steady, Muslims will grow and people with no religion will decline as a share of the world’s population in the coming decades.
Religious Composition by Country, 2010-2050
The religious profile of the world is rapidly changing, driven primarily by differences in fertility rates and the size of youth populations among the world’s major religions, as well as by people switching faiths. This table details the estimated religious composition of 198 countries and territories for 2010 to 2050.
7 key changes in the global religious landscape
What will the world’s religious landscape look like a few decades from now?
Pope Francis’ popularity extends beyond Catholics
Seven-in-ten Americans rate him favorably, including two-thirds of those with no religious affiliation, a Pew Research Center poll finds.