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.
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.
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.
Test your knowledge with our short, 10-question quiz, which includes questions on the size and distribution of the 2010 global Christian population.
While a majority of Muslim Americans say they have endured suspicion and enhanced scrutiny since the 9/11 attacks nearly 10 years ago, a wide-ranging survey finds no indication of increased alienation and anger or rising support for Islamic extremism. On the contrary, majorities of Muslim Americans express concern about the possible rise of Islamic extremism, both here and abroad.
The world's Muslim population is expected to increase by about 35% in the next 20 years, rising from 1.6 billion in 2010 to 2.2 billion by 2030, according to new population projections by the Pew Research Center's Forum on Religion & Public Life. Globally, the Muslim population is forecast to grow at about twice the rate of the non-Muslim population over the next two decades.