Suffragan of Province of Dubuque
Most Rev. John E. Keehner
Bishop
Since February 12, 2025
Most Rev. R. W. Nickless
Bishop Emeritus of Sioux City
Current Leadership
2025–present
Former Ordinaries
2005–2025
Daniel Cardinal DiNardo
1998–2004
Most Rev. Lawrence D. Soens
1983–1998
Most Rev. Frank H. Greteman
1970–1983
Most Rev. Joseph M. Mueller
1948–1970
1947–1947
Most Rev. Edmond Heelan
1920–1948
Most Rev. Philip J. Garrigan
1902–1919
Former Auxiliaries
1965–1970
1918–1920
