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

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.

Fact Tank Apr. 7, 2015

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.

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Religion Apr. 2, 2015

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.

Fact Tank Apr. 2, 2015

7 key changes in the global religious landscape

What will the world’s religious landscape look like a few decades from now?

Fact Tank Mar. 13, 2015

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.

Religion Mar. 5, 2015

In U.S., Pope’s Popularity Continues to Grow

Nearly two years into his papacy, Pope Francis continues to be widely popular: Seven-in-ten Americans view him favorably, including 90% of U.S. Catholics.

Fact Tank Feb. 26, 2015

5 key findings about global restrictions on religion

There was an overall decline in social hostilities to religion in 2013, though harassment of Jews worldwide reached a high. These are five key takeaways from our religious restrictions report.

Fact Tank Jan. 22, 2015

House Catholics are trending Republican

More House Republicans in the new, 114th Congress identify as Catholic than in any other recent Congress, and they now outnumber Catholic Democrats in the House.