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, Oklahoma provider, on land owned by brothers Dr. Michael Thorp and Tom Thorp. Oklahoma State University geographer Carlos Cordova, and geography doctoral student Tom Cox excavated the site from September 2013 until October 2013. Oklahoma State University has plans to display the mammoth, which was donated by the Thorp's. Helena is located at (36.546478, -98.270558). According to the United States Census Bureau, the town has a total area of , all of it land. Helena lies along State Highway 58. As of the census of 2000, there were 443 people, 177 households, and 120 families residing in the town. The population