Ontonagon County
Parcel & Property Data
About This Data
LandBrief holds 13,692 parcel records for Ontonagon County, sourced from county records. Each includes the parcel boundary, and — where the county publishes them — owner, situs address, acreage, assessed values and legal description.
Data from the Ontonagon County assessor roll dated June 2025, loaded August 2026. See data sources for every county’s vintage.
Explore Ontonagon County
Ontonagon County by the Numbers
- Median parcel size
- 7.9 acres
measured from mapped boundaries - 90th-percentile parcel
- 155.4 acres
- County land area
- 839,026 acres
U.S. Census measurement - Communities
- 12
59.4% of parcels outside any incorporated place - Out-of-state owners
- 25.4% of parcels
by owner mailing address
Who Owns Ontonagon County?
Share of the county’s 13,692 parcels by the kind of owner on record. Classified from owner names, so the boundaries are approximate; an entity the rules cannot place counts as an individual.
| Owner type | Share of parcels |
|---|---|
| Individuals | 70.5% |
| Companies & organizations | 12.2% |
| Trusts & estates | 8.5% |
| Government | 8.4% |
| Other / unclassified | 0.4% |
The largest owner on record is USA NATIONAL FOREST with 667 parcels — see the full landowner leaderboard.
Parcel Records (~13,692 total)
| Parcel ID | Owner | Address | City | Acreage |
|---|---|---|---|---|
| 01 307 002 00 | RUTZ DAVE R TRUSTEE 50% & | FH 230 | Unincorporated | 40.19 † |
| 01 319 002 00 | HICKS HILDA LE & MARSH MICHAEL J & | FH 230 | Unincorporated | 78.42 † |
| 01 320 003 00 | ZIELINSKI DAVID A. | FH 230 | Unincorporated | 39.90 † |
| 01 322 001 12 | PAIROLERO JOSEPH A | FH 230 | Unincorporated | 39.86 † |
| 01 202 005 00 | WARREN JASON & BORCHARDT ALLISON | 17116 FH 250 | Unincorporated | 4.75 † |
| 01 326 001 00 | MILLER GLEN L & ROSEMARIE A | 20205 FH 250 | Unincorporated | 79.11 † |
| 01 326 001 00 | MILLER GLEN L & ROSEMARIE A | 20205 FH 250 | Unincorporated | 79.25 † |
| 01 326 001 01 | MILLER GLEN L & ROSEMARIE A | 20205 FH 250 | Unincorporated | 1.00 † |
| 01 130 002 00 | DRIESENGA DENNIS LE & DRIESENGA | FH 250 | Unincorporated | 28.25 † |
| 01 312 003 00 | BAILEY WILLIAM A & JACINTA L | 36077 FH 360 | Unincorporated | 39.69 † |
Download Ontonagon County parcel data
All 13,692 parcels in Ontonagon County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
Get Ontonagon County on FreeParcelData →Nearby counties
Frequently Asked Questions
How many parcels are in Ontonagon County?
The Ontonagon County assessor roll on file records 13,692 parcels across 12 communities, with 59.4% lying outside any incorporated place.
Who owns the most land in Ontonagon County?
USA NATIONAL FOREST holds 667 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in Ontonagon County?
Measured from mapped boundaries, the median parcel is 7.9 acres, and nine parcels in ten are under 155.4 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of Ontonagon County is owned from out of state?
25.4% of parcels list an owner mailing address outside MI, per the county’s own records.
How much of Ontonagon County is government-owned?
Government entities — federal, state, and local — hold 8.4% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the Ontonagon County assessor roll dated June 2025. Counties deliver on their own schedules; the methodology page explains how records are processed and the data sources page tracks every county’s vintage.
Browse by City (12)
13,692 parcels across 12 communities in Ontonagon County.