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.
Christianity in Canada
Adherents of Eastern Orthodox Christianity in Canada belong to several ecclesiastical jurisdictions. Historically, Eastern Orthodoxy was introduced to Canada during the course of 19th century, mainly through emigration of Christians from Eastern Europe and the Middle East. Honoring such diverse heritage, Eastern Orthodoxy in Canada is traditionally organized in accordance with patrimonial jurisdictions of autocephalous Eastern Orthodox Churches, each of them having its own hierarchy with dioceses and parishes. According to 2011 census data, Greek Orthodox community constitutes the largest Eastern Orthodox community in Canada, with 220,255 adherents. It is followed by other communities: Russian Orthodox (25,245), Ukrainian Orthodox (23,845), Serbian Orthodox (22,780), Romanian Orthodox (7,090), Macedonian Orthodox (4,945), Bulgarian Orthodox (1,765), Antiochian Orthodox (1,220) and several other minor communities within Eastern Orthodoxy.