Pew Research Center reports and data on the world’s largest religious group.

Fact Tank May. 22, 2015

Mormons more likely to marry, have more children than other U.S. religious groups

Two-thirds (66%) of U.S. Mormon adults are currently married, down slightly from 71% in 2007 – but still high compared with current rates among Christians overall (52%) and U.S. adults overall (48%).

Fact Tank May. 19, 2015

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.

Fact Tank May. 18, 2015

Mainline Protestants make up shrinking number of U.S. adults

In recent years, the share of Americans who identify with mainline Protestantism has been shrinking significantly, a trend driven partly by generational change.

Fact Tank May. 15, 2015

Compared with other Christian groups, evangelicals’ dropoff is less steep

One big reason evangelical Protestants have not declined at the same rate as other major Christian groups is that they are gaining new converts at a greater rate than they are losing people who were raised in the tradition.

Fact Tank May. 12, 2015

5 key findings about the changing U.S. religious landscape

Christians are declining, both as a share of the U.S. population and in total number, while religious “nones” continue to rise.

Religion May. 12, 2015

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.

2015RLSpromo140x140 (1)
Religion May. 12, 2015

Religious Landscape Study

Explore the geographic distribution and demographics of America’s major religious groups.

Fact Tank Apr. 23, 2015

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.

Fact Tank Apr. 15, 2015

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.

Fact Tank Apr. 14, 2015

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.