The largest religious organization in the state is the Roman Catholic Church, which had 54,359 and 102 congregations in 2000. Southern Baptists constituted the largest Protestant denomination, with 22,959 adherents and 68 congregations.
Many Aleuts were converted to the Russian Orthodox religion during the 18th century, and small Russian Orthodox congregations are still active on the Aleutian Islands, in Kodiak and southeastern Alaska, and along the Yukon River. The Orthodox Church in America—Territorial Dioceses had 20,000 adherents and 46 congregations in 2000.
Other major groups were the Latter-Day Saints (Mormons), 19,019 adherents; Assembly of God, 11,638; Independent, Non-Charismatic Churches, 7,600; and Episcopalians, 6,693. There were about 3,525 Jews and 1,381 Muslims. About 65.7% of the population were not counted as members of any religious organization.