Roman Catholic Diocese of Helena Roman Catholic Diocese of Helena The Diocese of Helena () is the Catholic diocese for western Montana with its cathedral located in Helena, the state capital. The diocese was erected from the year-old Vicarate of Montana on March 7, 1884, while Montana was still a territory. The diocese is a suffragan of the Archdiocese of Portland, which encompasses Oregon, Idaho, and Montana. Before becoming a diocese, this was the Vicariate of Montana (covering the whole territory and then state of Montana). For its first twenty years, the diocese served all of Montana. In 1904 the new Diocese of Great Falls-Billings
Helena, Montana black mayor. The "Independent Record" reported contested research indicating that in the early 1870s one E. T. Johnson, listed in the city directory as a black barber from Washington D.C., had been elected mayor, before Helena became an incorporated town. Helena is located at (46.595805, −112.027031), at an altitude of 4,058 feet (1,237 m). Surrounding features include the Continental Divide, Mount Helena City Park, Spring Meadow Lake State Park, Lake Helena, Helena National Forest, the Big Belt Mountains, the Gates of the Mountains Wilderness, Sleeping Giant Wilderness Study Area, Bob Marshall Wilderness, Scapegoat Wilderness, the Missouri River, Canyon Ferry Lake,