Iron Mountain, Michigan
Iron Mountain is a Michigan city in Dickinson County, home to about 7,500 people.
Iron Mountain owes its existence to ore. The Chapin Mine, the richest on the Menominee Range, gave up more than twenty-seven million tons of iron and built the town around it starting in 1879, and that mining heritage still defines the place. The Chapin ran so wet that the city kept it dry with the Cornish Pump, a 725-ton, 54-foot steam pumping engine, the largest ever built in the United States, now the centerpiece of a downtown museum. As Dickinson County's seat, Iron Mountain anchors this corner of the Upper Peninsula, hard up against the Wisconsin line.
Population
~7,500
Type
city
Home tax rate
41.1–44.2 mills
School districts
2
What would you like to know?
Explore Iron Mountain
What it's like — the place, local stories, and what's worth knowing about the community.
Get to know it →Moving or buying here?
The property-tax pop-up, the homebuyer calculator, school-district rates, and the local rules to check.
See the practical stuff →Get to know it
About Iron Mountain
Winter is the city's other claim to fame. Every February jumpers launch off the Pine Mountain ski jump, a 176-foot steel scaffold standing nearly six hundred feet above the countryside, in an elite international tournament that organizers call the biggest in the country. The U.S. distance record for a regular hill, about 472 feet, was flown here. In summer you can drive Kramer Drive right to the top of the platform for the view.
On the practical side, Iron Mountain does not levy a city income tax, so residents aren't taxed twice on their wages. As with the rest of Michigan, property taxes come in two bills a year, one in summer and one in winter. The notes below fill in the history and the tax details.
More about Iron Mountain
Porch Note
How Dickinson County got its name
On May 21, 1891, Michigan drew its very last county line -- and named its newest county for Donald M. Dickinson, a Detroit lawyer who had just served as the nation's Postmaster General.
Read this note →Porch Note
The Cornish Pump, Iron Mountain's gentle giant
Iron Mountain's Chapin Mine was one of the wettest mines ever worked -- so they built the largest steam pumping engine in American history to keep it dry. It's still here, all 725 tons of it.
Read this note →Porch Note
The Pine Mountain ski jump, where Americans learned to fly
Since 1937, ski jumpers have launched off Pine Mountain in Iron Mountain -- one of the highest artificial ski jumps in the world, home of the longest jump ever made on a regular hill in America.
Read this note →Porch Note
Your Backyard Grill Was Invented by Henry Ford (Out of Sawdust)
The charcoal briquette became a household product thanks to Henry Ford, who turned U.P. sawmill scrap into Kingsford Charcoal.
Read this note →Porch Note
Why Do Some Parts of the U.P. Have a Different Time Than the Rest of Michigan?
Most of Michigan runs on Eastern Time, but four counties in the western U.P. that border Wisconsin — Gogebic, Iron, Dickinson, and Menominee — sit on Central Time.
Read this note →The practical stuff
Moving or buying in Iron Mountain
The seller's tax bill may not be your tax bill.
2025 property-tax snapshot
- Primary home (PRE)
- 41.1331 mills - 44.2364 mills
- Other property / non-homestead
- 59.1331 mills - 62.0407 mills
- School districts available
- 2 in Iron Mountain
One mill means $1 per $1,000 of Taxable Value. Rate rows come from the official 2025 Michigan Treasury report. Last reviewed June 8, 2026.
What these local words mean
- Primary home (PRE)
- A home you own and live in as your main home. PRE stands for Principal Residence Exemption and can lower the school operating tax.
- Non-homestead
- Property that is not treated as the owner's main home, such as a rental, vacation home, or second home.
- Assessor
- The local office that estimates and records property values and exemptions.
- Treasurer
- The local office that collects property tax payments and can confirm bill timing.
Michigan homebuyer tax calculator
See the tax bill after you buy.
Where is the house?
Pick the county, city or township, and school district. We use the official 2025 tax rates published by Michigan Treasury.
Not sure of the school district? Check the property listing. It is usually under "Schools."
Need to double-check the exact parcel? Use the official state estimator at treas-secure.state.mi.us/ptestimator or call the local treasurer. Rates can change across city, township, village, and school district lines, so the exact parcel matters.
What buyers in Iron Mountain should know
Michigan property taxes start with Taxable Value, not the price you paid for the home. Local millage rates are applied to that number.
While the same owner keeps the home, Proposal A caps how much Taxable Value can rise each year. When the home sells, that cap usually comes off. This is called uncapping.
After uncapping, the buyer's Taxable Value usually moves closer to State Equalized Value, or SEV. SEV is often about half of the home's market value.
Bottom line: a longtime owner may have been taxed on an older, capped number. After you buy, the taxable number may reset higher, and your first full-year tax bill may be much higher than the seller's.
In Iron Mountain, your rate can vary by parcel. The school district tied to the property matters, and 2 school districts cover Iron Mountain.
For a primary home with PRE, Michigan's main-home exemption, rates currently run about 41.1 to 44.2 mills. Without PRE, non-homestead rates run about 59.1 to 62 mills. The calculator uses the exact local rates.
If this will be your main home, make sure the Principal Residence Exemption, or PRE, is handled with the local assessor. PRE is Michigan's main-home property tax exemption. It can remove up to 18 school operating mills. Rentals, vacation homes, and second homes usually use the non-homestead rate instead.
School districts in this area
Breitung Twp School
Primary home (PRE) 41.1331 mills · non-homestead 59.1331 mills
Iron Mountain City SC
Primary home (PRE) 44.2364 mills · non-homestead 62.0407 mills
Local rules and costs to check
Note-sized practical catches tied to Iron Mountain: taxes, property rules, permits, local costs, or other things worth checking before you decide.
Porch Note
Is there a city income tax in Iron Mountain?
Iron Mountain charges no city income tax -- neither do Kingsford or Norway, and neither does anywhere else in the Upper Peninsula. The nearest one is Grayling, well over a hundred miles away.
Read this note →Porch Note
In Michigan, you get two property-tax bills a year — not one
Most Michigan property owners get separate summer and winter tax bills, with local rules deciding what lands on each bill.
Read this note →Nearby places
Other Michigan Porch pages in Dickinson County — handy when you're comparing local tax rates, school districts, or nearby communities.
Next steps
What to check next for Iron Mountain
Get oriented here, then choose the next practical guide, calculator, or nearby place.
County
Open Dickinson County
See the county page for other cities, townships, villages, local notes, and the county-wide tax snapshot.
Open county page →Calculator
Run a buyer tax estimate
Use the Michigan homebuyer tax calculator if you want to compare a different place or school district.
Open calculator →Tax break
Understand PRE
Learn who qualifies for the primary-home tax break and how the deadlines work.
Read PRE guide →Questions buyers ask
Is this an exact number? +
No. It is a strong estimate based on Michigan's published 2025 tax rates for your area. Your actual bill depends on what the local assessor decides your home is worth, called the SEV. Use this to plan your budget, not to lock in an exact figure.
When will my higher tax kick in? +
The first calendar year after you close. Close in June 2026, and the seller's tax bill usually comes through for 2026. Your new popped-up bill arrives in 2027.
What's PRE? +
PRE is Michigan's primary-home tax break. If you own the home and live there as your main home, it can remove up to 18 mills of local school operating tax from the bill. Rentals, vacation homes, and second homes do not get it. File Form 2368 with the local assessor by June 1 for the summer bill or November 1 for the winter bill.
What are mills? +
Mills are the tax rate. One mill means $1 of tax for every $1,000 of Taxable Value. A 40-mill rate means about $40 per $1,000 of Taxable Value. Different areas have different rates because county, city or township, school, library, public safety, parks, and other local taxes are stacked together.
What's the inflation multiplier? +
It is the yearly number Michigan uses to cap Taxable Value increases while the same owner keeps the home. Think of it as the speed limit for Taxable Value. For the 2026 tax year, the multiplier is 1.027, or 2.7%. When a home sells, that cap usually resets.
Are there ways to avoid the pop-up? +
A few, mostly family transfers. Parent to child, spouse to spouse, sibling to sibling, and some grandparent transfers may avoid the reset if the home stays residential. For family transfers, talk to a Michigan real estate attorney.
Why is my number different from the tax history on a listing? +
Most tax history pages show what the current owner paid. That is often based on a protected, lower taxable value. This calculator estimates what your taxable value becomes after Michigan's uncapping rule.
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