The Roman Catholic Archdiocese of Dubuque (Latin: Archidioecesis Dubuquensis) is an ecclesiastical territory or diocese of the Roman Catholic Church in the northeastern quarter of the state of Iowa in the United States. It includes all the Iowa counties north of Polk Jasper Poweshiek Iowa Johnson Cedar and Clinton counties. It also includes the counties east of Kossuth Humboldt Webster and Boone counties. The Archdiocese has an area of about 17400 square miles (45000 km2).
