CHEYENNE, DIOCESE OF. — Cheyenne is the capital of the State of Wyoming in the United States and is a suffragan diocese of Denver in the State of Colorado. Its territory comprises the entire State of Wyoming (253,587 sq. km.) and Yellowstone National Park.
In 1947, out of a population of 264,000, Catholics numbered 40,083, under the care of 41 priests and 11 religious, with 66 churches, of which 26 were parish churches, 40 missions, and 16 stations; 2 parochial high schools (one for Indians) and 1 orphanage. In 1947 there were 185 conversions. This territory originally belonged to the Apostolic Vicariate of Nebraska, then to the Diocese of Omaha, erected on 2 Oct. 1885, until 2 Aug. 1887 when it was established as a suffragan diocese of St. Louis, then of Dubuque (15 June 1893), and finally of Denver on 15 Nov. 1941.