The Diocese of Jefferson City (Latin: Dioecesis Civitatis Jeffersoniensis) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in the state of Missouri in the United States, The diocese consists of 38 counties in mainly rural northeastern and central Missouri, and includes the urban areas of Columbia, and the state capital Jefferson City. The Cathedral of Saint Joseph is located in Jefferson City. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of St. Louis.
