Ontonagon County GIS Maps
Ontonagon County, Michigan, has 5,816 residents and covers 1,311.0 square miles. The population declined 14.2% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Ontonagon County is 26131.
Ontonagon is the county's largest population center. Ontonagon County also includes 8 zip codes, 3 public school districts and 20 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Ontonagon County Trends
- Population
- 5,816▾
- Median Home Value
- $101,000▴
- K-12 Enrollment
- 915▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Ontonagon County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Ontonagon County Population
Ontonagon County had 5,816 residents in 2020. That was 14.2% lower than in 2010. Ontonagon County had 2,002 fewer people in 2020 than it did in 2000, which points to a long-term population decline. The county is fairly spread out, with about 4 people per square mile. Some of the county's most populated postal areas include Ontonagon, Bruce Crossing and Mass City.
Population Trend in Ontonagon County MI
Ontonagon County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Ontonagon County Zip Codes
Ontonagon County has 8 zip codes. Some of the county's most populated zip codes include Ontonagon (49953), Bruce Crossing (49912) and Mass City (49948). Ontonagon is the largest zip by population, with about 2,541 residents or 44% of the county total. Together, the three largest zips account for about 67% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Ontonagon County MI
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 49953 | Ontonagon | 2,541 | ▾ -11.7% |
| 49912 | Bruce Crossing | 844 | ▾ -21.9% |
| 49948 | Mass City | 494 | ▾ -16.3% |
| 49925 | Ewen | 485 | ▾ -1.8% |
| 49971 | White Pine | 339 | ▾ -29.8% |
| Download all zip code data | |||
Ontonagon County Zip Code populations and trends per most recent census data.
Ontonagon County Demographics
Ontonagon County has a median age of 59.4, which makes the county a little older than Michigan overall. About 11.6% of residents are under 18, while 37.8% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 65 and over at about 37.8% of the population, which points to an older population profile. About 16.7% of adults have a bachelor's degree or higher, above the statewide figure of 31.8%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Ontonagon County MI
Median Age
59.4
Under 18
11.6%
Age 65+
37.8%
Bachelor's+
16.7%
Ontonagon County School Districts
Ontonagon County is served by 3 public school districts with 915 students enrolled in 2024. The largest districts on the county map are Adams Township, Ontonagon Area Schools and Ewen-Trout Creek Consolidated Schools. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Ontonagon County MI
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Adams Township School District | 474 | 51.8% | ▴ 3.5% |
| Ontonagon Area Schools | 271 | 29.6% | ▴ 8.4% |
| Ewen-Trout Creek Consolidated Schools | 170 | 18.6% | ▴ 3% |
| Download all school district data | |||
Ontonagon County school district enrollment and trends per most recent NCES reporting data.
Ontonagon County Housing & Real Estate
Ontonagon County has a median home value of $101,000 and a median gross rent of $571. About 87% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Michigan median, while rents come in below the state average. In March 2026, the median listing price was $172,450 and homes spent about 169 days on the market.
Ontonagon County Housing Mix
Ontonagon County housing mix: owner, renter and vacant units.
Ontonagon County Housing Trends
Ontonagon County median home value and rent trend (last 5 years).
Businesses in Ontonagon County, MI
Ontonagon County has 425 business listings across 155 categories. The largest categories in Ontonagon County business listings are Lake (28, 6.6%), Churches & Religious Organizations (18, 4.2%), and Parks & Recreation (14, 3.3%). The full Ontonagon County business listings dataset includes names, categories, addresses and contact details where available. Ontonagon County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Ontonagon County, MI
| Category | Businesses | Share |
|---|---|---|
| Lake | 28 | 6.6% |
| Churches & Religious Organizations | 18 | 4.2% |
| Parks & Recreation | 14 | 3.3% |
| Gas Stations | 11 | 2.6% |
| Landmark And Historical Building | 11 | 2.6% |
| Post Offices | 10 | 2.4% |
| Campgrounds & RV Parks | 10 | 2.4% |
| Waterfall | 10 | 2.4% |
| River | 9 | 2.1% |
| Lodge | 9 | 2.1% |
Ontonagon County Business Listings
| Business | Category | City |
|---|---|---|
| Sandy Beach Retreat | Accommodation | Bergland |
| Bond Falls Flowage | Active Life | Bruce Crossing |
| Nikkila Farms Airport | Airport | Greenland Township |
| Char's Cafe | American Restaurants | Bruce Crossing |
| OCAP Paws | Animal Shelters | Ontonagon |
| Heritage Antiques | Antique Store | Ontonagon |
| Settlers Depot Gallery | Art Gallery | Bruce Crossing |
| The Exchange Network | ATMs | Mass City |
| Big Valley Ford | Automotive Dealer | Ewen |
| Carquest Auto Parts | Automotive Parts And Accessories | Ontonagon |
| Download Ontonagon County business listings | ||
Ontonagon County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Ontonagon County Basemaps
Ontonagon County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Ontonagon County Data Package
This page shows a preview of what's included in the Ontonagon County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Ontonagon County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.