See the latest Pew Research Center reports and data on the world’s largest religious group.
Christians make up about the same proportion of the world’s population today as they did a century ago, but there has been a momentous shift in where they live.
Data: Global Christianity
View data on Christians in 232 countries in a series of sortable data tables. View all Christians and each tradition by number, as a percentage of the total Christian population and as a percentage of the overall population.
Map: Global Christianity
Select one of 232 countries, a region or the world to see the size of the Christian population in 2010. Filter data to see the 2010 population of the Christian traditions.
Quiz: How much do you know about Christianity around the world?
Test your knowledge with our short, 10-question quiz, which includes questions on the size and distribution of the 2010 global Christian population.
Romney’s Mormon Faith Likely a Factor in Primaries, Not in a General Election
About half of all voters, and 60% of evangelical Republicans, know that Mitt Romney is a Mormon. The former Massachusetts governor’s religion has implications for his nomination run, but not for the general election should he be nominated as his party’s standard bearer.
Are Republicans Ready Now for a Mormon President?
An important group within the Republican base, white evangelical Protestants, is more uncomfortable with the idea of a Mormon candidate than are other Republicans.
How many Christians are there in Egypt?
Senior research staff answer questions from readers relating to all the areas covered by our seven projects, ranging from polling techniques and findings, to media, technology, religious, demographic and global attitudes trends.