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Michigan · Upper Peninsula · Porcupine Mountains · Lake Superior
Ontonagon County, Michigan
The Porcupine Mountains and Lake of the Clouds — from Michigan's largest state park protecting one of the most significant old-growth forests remaining in the eastern United States to the Lake of the Clouds' mirror-still mountain lake at 1,958 feet elevation, 90 miles of Lake Superior shoreline, and a county of 6,000 people where wilderness defines everything.
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Office: Ontonagon County Emergency Services – coordinates with Michigan State Police Emergency Management and Homeland Security Division (MSP/EMHSD) and FEMA on hazard mitigation funding; confirm current contact via ontonagoncounty.org.
Sheriff: Ontonagon County Sheriff’s Office – 620 Conglomerate Street, Ontonagon, MI 49953 | (906) 884-4901; Sheriff Dale Rantala (raised in Ontonagon County, 1985 graduate of Ontonagon Area High School, attended Northern Michigan University for law enforcement, hired as a Correctional Officer in 1991); departments include Patrol, Investigations, Corrections, Community Policing, and Emergency Management Divisions.
Notes: For an active emergency, call 911.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: US-45 and M-64 serve Ontonagon, the county seat, on Lake Superior at the mouth of the Ontonagon River; the county is centrally located between Ironwood and Copper Harbor in the far western Upper Peninsula.
Notes: The Ontonagon Lighthouse, built in 1866, is one of the oldest lighthouses in Michigan.
Business & Permits
BUILDING & PERMITS
Office: Ontonagon County Building – Ontonagon, MI 49953.
Notes: Ontonagon County is home to the genuine story of the Ontonagon Boulder – a 3,708-pound mass of native copper discovered on the west branch of the Ontonagon River, historically significant to the Keweenaw Bay Indian Community as a site for offerings to Gitche Manitou. Long known to Native Americans and first documented by explorer Alexander Henry in 1766, the boulder was purchased and shipped to Washington, D.C. in 1843 – and it wasn’t simply a relic of Michigan’s copper boom, but the very discovery that sparked it. The boulder remains today in the Smithsonian’s National Museum of Natural History; a replica is on display at the Ontonagon County Historical Society Museum downtown. The county is also home to most of Porcupine Mountains Wilderness State Park (“the Porkies”), Michigan’s largest state park at roughly 59,020 acres, containing a 35,000-acre old-growth forest, a National Natural Landmark designation, and numerous historic copper mining sites.
Veterans Services
VETERANS SERVICES
Office: Ontonagon County Veterans Affairs – confirm current contact via ontonagoncounty.org.
Libraries
LIBRARIES
Ontonagon Township Library – 311 N. Steel St, Ontonagon, MI 49953 | (906) 884-4411.
Parks & Recreation
PARKS & RECREATION
Key Assets: Porcupine Mountains Wilderness State Park, the Ontonagon Lighthouse, and the Ontonagon County Historical Society Museum are the county’s premier attractions.
Notes: The genuine Ontonagon Boulder story – the copper discovery that sparked an entire mining boom, now held by the Smithsonian – is one of the most historically significant local facts covered anywhere in this project.
GIS & Maps
GIS & MAPS
Appraisal/Parcel Search: Ontonagon County Equalization Department – confirm current contact via ontonagoncounty.org.
Animal Services
ANIMAL SERVICES
Ontonagon County Animal Protection, Inc. (OCAP) – 35932 Airport Rd, Ontonagon, MI 49953 | (906) 884-2500 | Website: ocappaws.org.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Office: Ontonagon County – confirm current contact via ontonagoncounty.org.
NOTES: Ontonagon County is the fifth county in the tenth batch of the Michigan v2 A+ sourced redo. The genuine Ontonagon Boulder story – the copper discovery that sparked an entire mining boom, now held by the Smithsonian – is one of the most historically significant local facts covered anywhere in this project. All contact information above was sourced via web search as of early August 2026 and should be reconfirmed directly with the relevant office before a visit, deadline-sensitive filing, or emergency-adjacent decision.
About Ontonagon County
Ontonagon County is Michigan’s Porcupine Mountains Wilderness and Bond Falls county – the 60,000-acre old-growth forest preserve with the most significant unlogged temperate hardwood east of the Mississippi and the waterfall often called Michigan’s most beautiful define a remote UP county where Ontonagon serves the surrounding wilderness and Lake Superior communities.
Ontonagon (the county seat, population ~1,400) is Ontonagon County’s governmental hub on MI-28 on Lake Superior, a remote Upper Peninsula community whose Porcupine Mountains gateway, Bond Falls access, and Lake Superior setting anchor its identity.
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Ontonagon County Assessor at 725 Greenland Road, Ontonagon, MI 49953, phone 906-884-4255. MI assessed at 50% of true cash value.
Courts & Legal
Ontonagon County Probate Court at 725 Greenland Road, Ontonagon, MI 49953, phone 906-884-4255, handles estates and probate.
Marriage & Vital Records
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
COUNTY CLERK
725 Greenland Rd., Ontonagon, MI 49953
(906) 884-4255
Genealogy
County-level record sources
Ontonagon County Probate Court (estate/probate case files – see Probate section above).
Local societies
No dedicated Ontonagon County genealogical society was confirmed in available directories.
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Where to go
Ontonagon County Probate Court 725 Greenland Road, Ontonagon, MI 49953 (906) 884-4117 Ontonagon County is in Michigan’s western Upper Peninsula on Lake Superior, seated in Ontonagon.
Step 1: figure out which path applies
Michigan probate is governed by the Estates and Protected Individuals Code (EPIC), MCL 700.1101 et seq.
Transfer by Affidavit (Small Estate Affidavit) – under MCL 700.3982/700.3983, available when the estate’s gross value (after funeral and burial expenses) doesn’t exceed a threshold that’s adjusted annually for inflation (roughly $50,000-$53,000 in recent years). No real estate can be involved. At least 28 days must pass after death before this affidavit can be used. The affidavit isn’t filed with the court; it’s presented directly to whoever holds the asset (a bank, for instance), along with a death certificate.
Petition and Order for Assignment (PC 556) – a small estate process for estates at or below the same statutory threshold, but this one CAN include real property. An heir or the person who paid the funeral bill files this petition with the probate court; the judge reviews and signs the order, and there’s a filing fee plus a statutory inventory fee based on estate value.
Informal Probate – the standard track for most estates above the small-estate threshold. Filed using Application for Informal Probate and/or Appointment of Personal Representative (PC 558); the court issues Letters of Authority (PC 573) to the personal representative without a hearing when the application is straightforward.
Formal/Supervised Administration – required when the will is contested, there’s a dispute over who should serve as personal representative, or the estate needs ongoing court supervision.
Step 2: filing for probate
Gather the death certificate, the will (if any), and an inventory of the decedent’s assets to determine which path fits.
File the appropriate petition or application with the Probate Court in the county where the decedent lived – Ontonagon County allows probate court costs to be paid through its online payment portal.
For informal probate, the court reviews the application and issues Letters of Authority appointing the personal representative, typically without a hearing.
The personal representative gathers and inventories assets, notifies and pays valid creditors, and – no earlier than 12 months after appointment – files a Sworn Closing Statement (PC 584) for informal probate, or a Petition for Complete Settlement (PC 585) followed by a court Order of Complete Settlement (PC 586) for formal administration.
What it costs
Michigan probate generally runs 7 to 18 months and costs roughly 3% to 7% of the estate’s value in typical cases.
Filing fees vary by petition type; a statutory inventory fee, set by MCL 600.871, is calculated based on the estate’s total value and applies to most probate filings.
Michigan does not require an attorney for probate, though many people use one for anything beyond a very simple estate.
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
725 Greenland Rd., Ontonagon, MI 49953
(906) 884-4901
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
ELECTIONS
725 Greenland Rd., Ontonagon, MI 49953
(906) 884-4255
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Office: Ontonagon County Health Department – confirm current phone via ontonagoncounty.org.
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Last verified June 2026
County Facts
County Seat: Ontonagon
Population: 5,500
Area: 1,312 mi²
Established: 1848
Tier: 3
Public Records
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