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

Fact Tank Jul. 27, 2015

The most and least racially diverse U.S. religious groups

The nation’s population is growing more racially and ethnically diverse – and so are many of its religious groups, both at the congregational level and among broader Christian traditions.

Global Jul. 16, 2015

Extremism Concerns Growing in West and Muslim Countries

As the Islamic militant group ISIS continues to entrench itself in Syria and Iraq, concerns about Islamic extremism are growing in the West and in countries with significant Muslim populations.

Fact Tank Jul. 13, 2015

Some major U.S. religious groups differ from their members on the death penalty

Many large religious groups have taken positions in opposition to the death penalty even though that stance is sometimes at odds with the opinions of their adherents.

Fact Tank Jul. 10, 2015

How Bosnian Muslims view Christians 20 years after Srebrenica massacre

This weekend marks 20 years since the Srebrenica massacre – the killing of 7,000-8,000 Muslim men and boys by Bosnian Serb forces in a Bosnian town that had been designated a United Nations safe haven.

Fact Tank Jun. 3, 2015

Ratings of Muslims rise in France after Charlie Hebdo, just as in U.S. after 9/11

There has been considerable debate over the country’s Muslims and the role of extremism, but no backlash against Muslims in French public opinion.

Fact Tank Jun. 2, 2015

5 key findings about how Europeans view the economy and EU

Despite their increasingly upbeat economic mood, Europeans show growing support for nontraditional political parties critical of the EU.

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.

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.

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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.