Christians are declining, both as a share of the U.S. population and in total number, while religious "nones" continue to rise.
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.
Explore the geographic distribution and demographics of America's major religious groups.
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.
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.
What will the world’s religious landscape look like a few decades from now?
Tens of millions of Latin Americans have left the Roman Catholic Church in recent decades and embraced Pentecostal Christianity.
Nearly 40% of the world's Catholics live in Latin America, but many people in the region have converted from Catholicism to Protestantism, while some have left organized religion altogether.
Atheists, agnostics and people who have no religion in particular may be growing in number in the United States, but they are not uniformly against religion having a role in society.
Half of the world’s population lives in just six countries. But in many cases, the world’s major religious groups are even more concentrated.