The following links will take you to the web sites of some of Michigan's local trial courts.

District  
Circuit
Probate
Trial

District Courts
1st District Court (Monroe County)
3A District Court (Branch County)
3B District Court (St. Joseph County)
8th District Court (Kalamazoo County)
10th District Court (Calhoun County)
12th District Court (Jackson County)
14A District Court (Washtenaw County except
City of Ann Arbor and Township of Ypsilanti)
15th District Court (City of Ann Arbor)
16th District Court (Livonia)
17th District Court (Township of Redford)
18th District Court (City of Westland)
19th District Court (City of Dearborn)
23rd District Court (City of Taylor)
24th District Court (Cities of Allen Park & Melvindale)
33rd District Court (Woodhaven)
35th District Court (Cities of Northville and Plymouth, Townships of
   Northville, Plymouth and Canton)
36th District Court (City of Detroit)
37th District Court (Center Line and Warren)
38th District Court (City of Eastpointe)  
39A District Court (Roseville and Fraser)
39B District Court (Fraser)
40th District Court (St. Clair Shores)
41A District Court (Macomb Township, Shelby Township, and Utica)
41B District Court (Clinton Township, Harrison Township, and Mt. Clemens)
42-1 District Court (Armada and Armada Township, Bruce Township, Memphis, Ray
    Township, Richmond and Richmond Township, Romeo, and Washington Township)
42-2 District Court (Chesterfield Township, Lenox Township, New Baltimore, and
   New Haven )
43rd District Court (City of Ferndale)
44th District Court (City of Royal Oak)  
45A District Court (City of Berkley)
46th District Court (Cities of Southfield and Lathrup Village and
   Township of Southfield)
47th District Court (Cities of Farmington and Farmington Hills)  
48th District Court (Cities of Birmingham, Bloomfield Hills, Keego Harbor, Orchard
   Lake Village, and Sylvan Lake; Townships of Bloomfield and West Bloomfield)  
51st District Court (Waterford Township)  
52-1 District Court (Cities of Novi, South Lyon, Wixom, and Walled Lake)
52-2 District Court (Villages of Holly, Davisburg, Clarkston, and Ortonville)
52-3 District Court (Cities of Auburn Hills, Rochester, Rochester Hills)
52-4 District Court (Cities of Troy and Clawson)
53rd District Court (City of Howell)
53rd District Court (City of Brighton)
54A District Court (City of Lansing)
54B District Court (City of East Lansing)
55th District Court (Ingham County)
56th District Court (Eaton County)
57th District Court (Allegan County)
58th District Court (Ottawa County)
59th District Court (City of Grandville)
60th District Court (Muskegon County)
61st District Court (City of Grand Rapids)
62A District Court (City of Wyoming)
62B District Court (Kentwood)
63rd District Court (Cities of Cedar Springs, Rockford, East Grand Rapids, and Lowell; Townships of Tyrone, Solon, Nelson, Spencer, Sparta, Algoma, Courtland, Oakfield, Alpine, Cannon, Plainfield, Grattan, Grand Rapids, Ada, Vergennes, Cascade, Lowell, Byron, Gaines, Caledonia, and Browne)
65A District Court (Clinton County)
65B District Court (Gratiot County)
67th District Court (Genesee County)
68th District Court (City of Flint)
70th District Court (Saginaw County)
71A District Court (Lapeer County)
71B District Court (Tuscola County)
72nd District Court (St. Clair County)
74th District Court (Bay County)
75th District Court (Midland County)
76th District Court (Isabella County)
83rd District Court (Roscommon County)
85th District Court (Manistee County)
86th District Court (Antrim, Grand Traverse, and Leelanau Counties)
88th District Court (Montmorency Count)
89th District Court (Cheboygan and Presque Isle Counties)
91st District Court (Chippewa County)
 

Circuit Courts
1st Circuit Court (Hillsdale County)
2nd Circuit Court (Berrien County)
3rd Circuit Court (Wayne County)
4th Circuit Court (Jackson County )
5th Circuit Court (Barry County)
6th Circuit Court (Oakland County)
7th Circuit Court (Genesee County)
9th Circuit Court (Kalamazoo County)
10th Circuit Court (Saginaw County)  
12th Circuit Court (Houghton County)
13th Circuit Court (Antrim, Grand Traverse, and Leelanau Counties)
14th Circuit Court (Muskegon County)
15th Circuit Court (Branch County)
16th Circuit Court (Macomb County)  
17th Circuit Court (Kent County)
18th Circuit Court (Bay County)
19th Circuit Court (Benzie County)
19th Circuit Court (Manistee County)
20th Circuit Court (Ottawa County)  
21st Circuit Court (Isabella County)  
22nd Circuit Court (Washtenaw County)
25th Circuit Court (Marquette County)
28th Circuit Court (Missaukee County)
29th Circuit Court (Clinton County)
29th Circuit Court (Gratiot County)
30th Circuit (Ingham County)   
31st Circuit Court (St. Clair County)  
33rd Circuit Court (Charlevoix County)
34th Circuit Court (Ogemaw and Roscommon Counties)
37th Circuit Court (Calhoun County)
38th Circuit Court (Monroe County)
39th Circuit Court (Lenawee County)
40th Circuit Court (Lapeer County)
41st Circuit Court (Dickinson County)
42nd Circuit Court (Midland County)  
44th Circuit Court (Livingston County)   
45th Circuit Court (St. Joseph County)  
46th Circuit Court (Crawford County)
46th Circuit Court (Kalkaska County)
46th Circuit Court (Otsego County)
48th Circuit Court (Allegan County)
50th Circuit Court (Chippewa County)
54th Circuit Court (Tuscola County)
56th Circuit Court (Eaton County)
57th Circuit Court (Emmet County)

Probate Courts
Alpena County Probate Court
Antrim County Probate Court
Bay County Probate Court #
Branch County Probate Court
Calhoun County Probate Court
Charlevoix County Probate Court
Clinton County Probate Court
Eaton County Probate Court
Genesee County Probate Court
Grand Traverse County
Ingham County Probate Court
Ionia County Probate Court
Isabella County Probate Court
Jackson County Probate Court
Kalamazoo County Probate Court
Kent County Probate Court
Lapeer County Probate Court
Leelanau County Probate Court
Livingston County Probate Court
Macomb County Probate Court
Manistee County Probate Court
Marquette County Probate Court
Midland County Probate Court
Monroe County Probate Court
Oakland County Probate Court
Oscoda County Probate Court
Ottawa County Probate Court
Roscommon County Probate Court
St. Clair County Probate Court
St. Joseph County Probate Court
Tuscola County Probate Court
Washtenaw County Probate Court
Wayne County Probate Court
 

Trial Courts
46th Circuit Trial Court  
Barry County Trial Court
Berrien County Trial Court +
Calhoun County Trial Courts
Isabella County Trial Court
Kent County Trial Courts
Monroe County Trial Courts
St. Clair County Trial Courts
Washtenaw County Trial Court