Roman Catholic Archdiocese of Denver Tags: Clerical Administrative Region, Diocese.The Archdiocese of Denver is the Catholic Archdiocese of the Roman Rite for the city of Denver Colorado and the Colorado counties of Adams Arapahoe Boulder Broomfield Denver Jefferson Larimer Logan and Weld. thumbnail point Established August 16 1887 jurisdiction Diocese patron Francis of Assisi, Immaculate Conception province List of the Catholic dioceses of the United States latitude 39.6933 longitude -104.948 Learn more... Loading...