Tags: Clerical Administrative Region, Diocese.
The Roman Catholic Diocese of Columbus (Latin: Dioecesis Columbensis) is a Roman Catholic diocese in the Ecclesiastical Province of Cincinnati covering 23 counties in Ohio. The episcopal see of the diocese is situated at Columbus Ohio. The diocese was erected on March 3 1868 by Pope Pius IX out of the Archdiocese of Cincinnati. On October 21 1944 the diocese lost territory when Pope Pius XII erected the Diocese of Steubenville.
