| Business | Phone |
| Marquette Cnty Juvenile Court 234 W Baraga Ave, Marquette 49855 | (906) 225-8280 |
| Marquette County Court Clerk 234 W Baraga Ave, Marquette 49855 | (906) 225-8330 |
| Marquette County Probate Court 234 W Baraga Ave, Marquette 49855 | (906) 225-8300 |
| Circuit Court 234 W Baraga Ave, Marquette 49855 | (906) 225-8217 |
| Circuit Court Probation/Parole Courthouse Annex 36, Marquette 49855 | (906) 225-8224 |