| Date | Event | From | To |
|---|
| 19 May 1882 | Erected | Diocese of Detroit
| Diocese of Grand Rapids (erected) (Northern part of Lower Michigan)
|
| 22 May 1937 | Metropolitan Changed | | Diocese of Grand Rapids (from Cincinnati)
|
| 26 February 1938 | Territory Lost | Archdiocese of Detroit (Huron, Tuscola, and Sanilac)
Diocese of Grand Rapids (Saginaw, Gratiot, Midland, Bay, Gladwin, Arenac, Ogemaw, Iosco, Oscoda, Alcona, Montmorency, Alpena, and Presque Isle)
| Diocese of Saginaw (erected)
|
| 26 February 1938 | Territory Added | Diocese of Lansing (Allegan, Barry, and Ionia)
| Diocese of Grand Rapids
|
| 19 December 1970 | Territory Lost | Diocese of Grand Rapids (Manistee, Wexford, Misaukee, Roscommon, Benzie, Grand Traverse, Kalkaska, Crawford, Leelanau, Antrim, Otsego, Charlevoix, Emmet, and Cheboygan)
Diocese of Saginaw (Presque Isle, Montmorency, Alpena, Oscoda, Alcona, Ogemaw, and Iosco)
| Diocese of Gaylord (erected)
|
| 19 December 1970 | Territory Lost | Diocese of Grand Rapids (Allegan and Barry)
Diocese of Lansing (Berrien, Cass, Saint Joseph, Branch, Van Buren, Kalamazoo, and Calhoun)
| Diocese of Kalamazoo (erected)
|
| 19 December 1970 | Territory Lost | Diocese of Grand Rapids (Isabella and Clare)
| Diocese of Saginaw
|