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.
Orthodox Church in America
The Orthodox Church in America (OCA) is an Eastern Orthodox church, partly recognized as autocephalous, in North America. The OCA consists of more than 700 parishes, missions, communities, monasteries and institutions in the United States and Canada. In 2011, it had an estimated 84,900 members in the United States.