Pew Research Center reports and data on the world’s fastest growing religious group.
Growing share of U.S. immigrants have no religious affiliation
One-in-five immigrants identified themselves as unaffiliated in 2014, an increase of 4 percentage points from the 16% who said so in 2007.
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.
By 2050, India to have world’s largest populations of Hindus and Muslims
India is projected to have 310 million Muslims (11% of the global total), making it the country with the largest population of Muslims in the world.
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.
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?