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

ReligionNovember 14, 2017

Q&A: A closer look at Orthodox Christians

Read a Q&A with George Demacopolous, a professor of theology at Fordham University, to examine trends and issues in the Orthodox Christian world.

ReligionNovember 8, 2017

Key takeaways about Orthodox Christians

Today, there are approximately 260 million Orthodox Christians in the world, accounting for 12% of the global Christian population. Read key takeaways about Orthodox Christians.

ReligionNovember 8, 2017

Orthodox Christianity in the 21st Century

Concentrated in Europe, Orthodox Christians have declined as share of the global Christian population, from 20% in 1910 to 12% today. But the Ethiopian community is highly observant and growing.

ReligionOctober 27, 2017

500 years after the Reformation, 5 facts about Protestants around the world

Five centuries after the Reformation, global Protestant Christianity looks very different than it did at its inception. Here is a look at some key facts about Protestants around the world.

GlobalJuly 12, 2017

In first months of Trump presidency, Christians account for growing share of U.S. refugee arrivals

More Christian than Muslim refugees have been admitted to the United States in the first months of the Trump administration, reversing a trend that had seen Muslims outnumber Christians in the final fiscal year under President Barack Obama, a Pew Research Center analysis of U.S. State Department refugee data has found.

ReligionJune 9, 2017

Christians faced widespread harassment in 2015, but mostly in Christian-majority countries

Christians were harassed by governments or social groups in a total of 128 countries in 2015 – more countries than any other religious group.

ReligionMay 30, 2017

Orthodox Christians in Europe more likely to believe than practice their religion

Religious belief is much more common than religious practice among Orthodox Christians in Central and Eastern Europe.

Pew Research CenterMay 22, 2017

Most in former Yugoslavia favor multicultural society, although some tensions remain

Most people in Bosnia, Croatia and Serbia seem willing to share their societies with ethnic and religious groups different from their own.

ReligionMay 10, 2017

Religious Belief and National Belonging in Central and Eastern Europe

Religion has reasserted itself as an important part of individual and national identity in a region that was once dominated by atheist communist regimes.

Pew Research CenterApril 26, 2017

Among white evangelicals, regular churchgoers are the most supportive of Trump

White evangelicals overwhelming voted for Donald Trump in the 2016 election, and their support has continued into his presidency.