Roman Catholic Archdiocese of Denver

The Archdiocese of Denver is the Catholic Archdiocese of the Latin Rite that covers an area of 40,154 square miles which includes the city of Denver, Colorado, and the Colorado counties of Adams, Arapahoe, Boulder, Broomfield, Denver, Jefferson, Larimer, Logan, and Weld. It is part of the XIII Conference Region and includes 113 parishes, 307 priests, and an estimated 550,000 lay Catholics. The seat of the archdiocese is the Cathedral Basilica of the Immaculate Conception at 401 East Colfax Avenue.
The area that now comprises the Denver Archdiocese was part of the Diocese of Santa Fe. In 1868, Pope Pius IX split territory from the Diocese of Santa Fe in New Mexico and the Diocese of Grass Valley in California to form the Vicariate Apostolic of Colorado and Utah. In 1870, he changed the name to the Vicariate Apostolic of Colorado, and transferred the territory of Utah to the Archdiocese of San Francisco. August 16, 1887, Pope Leo XIII created the Diocese of Denver, which covered the entire state of Colorado.

Wikipedia