A Report on the Size and Distribution of the World’ s Christian Population-Orthodox Christian

There are about 260 million Orthodox Christians, making up 12% of the global Christian population.

Nearly four-in-ten Orthodox Christians worldwide (39%) reside in Russia, the country with the largest number of Orthodox. Ethiopia has the second-largest number of Orthodox Christians

via Global Christianity – A Report on the Size and Distribution of the World’ s Christian Population- Pew Forum on Religion & Public Life.