Eastern Orthodoxy by country
Based on the numbers of adherents, the Eastern Orthodox Church (also known as Eastern Orthodoxy) is the second largest Christian communion in the world after the Roman Catholic Church. The most common estimates of the number of Eastern Orthodox Christians worldwide is approximately 200–260 million. The numerous Protestant groups in the world, if taken all together, outnumber the Eastern Orthodox, but they differ theologically and do not form a single communion.
Serbian Orthodox Church
Based on the official census results in countries which encompass territorial canonic jurisdiction of the Serbian Orthodox Church (Serb autochthonous region of Western Balkans), there are more than 8 million adherents of the church. Orthodoxy is the largest single religious faith in Serbia with 6,079,296 adherents (84.5% of the population belonging to it) according to the 2011 census, and in Montenegro with 460,383 (74%). It is the second largest faith in Bosnia and Herzegovina with 31.2% of adherents, and in Croatia with 4.4% of adherents. Figures for eparchies abroad (Western Europe, North America, and Australia) is unknown although some estimates can be reached based on the size of Serb diaspora, which numbers over 2 million people.