The share of Americans who leave Islam is offset by those who become Muslim
About a quarter of adults who were raised Muslim no longer identify as members of the faith. But Islam gains about as many converts as it loses.
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Even with no new migration, Muslims are projected to increase as a share of Europe’s population.
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.
Islam is the most common state religion, but many governments give privileges to Christianity.
Religion has reasserted itself as an important part of individual and national identity in a region that was once dominated by atheist communist regimes.
Overall, U.S. adults with college degrees are less religious than others on some measures. However, Christians with higher levels of education appear to be just as religious as those with less schooling.