Suffragan of Province of Chicago
Most Rev. Dennis E. Spies
Apostolic Administrator
Since February 6, 2026
Auxiliary Bishop
Since September 27, 2024
Most Rev. Robert D. Conlon
Bishop Emeritus of Joliet
Since May 4, 2020
Current Leadership
2026–present
2024–present
2020–present
Former Ordinaries
Most Rev. Ronald Hicks
2020–2025
Most Rev. Richard Pates
2019–2021
2011–2020
Most Rev. J. P. Sartain
2006–2010
Most Rev. Joseph L. Imesch
1979–2006
Most Rev. Martin D. McNamara
1948–1966
Former Auxiliaries
Most Rev. Joseph M. Siegel
2009–2017
Most Rev. James E. Fitzgerald
2002–present
Most Rev. Roger Kaffer
1985–present
Most Rev. Daniel L. Ryan
1981–1983
Most Rev. Daniel Kucera, O.S.B.
1977–1980
Most Rev. Raymond J. Vonesh
1968–present
