Ontonagon County, website
Ontonagon County in Michigan uses area code 906. On this page, you will see the physical addresses and contact information of the most relevant government agencies in Ontonagon County, including the Clerk’s Office, Sheriff’s Office, and the Health Department.
Sheriff’s Office
620 Conglomerate St., Ontonagon, MI 49953
Phone: (906) 884-4901
County Court
725 Greenland Rd., Ontonagon, MI 49953
Phone: (906) 884-2865
District Court
725 Greenland Road
Ontonagon, Michigan 49953
Phone: (906) 884-2887
Fax: (906) 884-2865
Circuit Court
725 Greenland Road
Ontonagon, Michigan 49953
Phone: (906) 884-4255
Fax: (906) 884-6796
County Clerk
725 Greenland Road
Ontonagon, MI 49953
Phone: (906) 884-4699
Treasurer
725 Greenland Rd., Ontonagon, MI 49953
Phone: (906) 884-4665
Ontonagon County Jail
620 Conglomerate Street, Ontonagon, MI 49953
Phone: (906) 884-4901
Emergency Services
35932 Airport Road
Ontonagon, MI 49953
Phone: (906) 884-4980
Cell: (906) 390-0309
Fire Department
320 River St., Ontonagon, MI 49953
Phone: (906) 884-2131
Social Services
730 S. 7th St., Ontonagon, MI 49953
Phone: (906) 884-4951
Health Department
408 Copper St., Ontonagon, MI 49953
Phone: (906) 884-4485