Marquette County, Michigan
County seat: Marquette · Population 68,064 (2025) · 1,809 sq mi
Marquette County is the 28th most populous of Michigan's 83 counties, with 68,064 people (2025 estimate). Its county seat is Marquette. It is part of the Upper Peninsula (Region 1) region, one of the 10 Michigan prosperity regions. The map shows its 3 cities and towns and the 8 neighboring counties.
Marquette County facts
- County seat
- Marquette
- Population (2025 estimate)
- 68,064 +2.3% since 2020
- Land area
- 1,809 sq mi 1st largest of 83
- Water area
- 1,616 sq mi
- Population density
- 38 per sq mi
- Established
- 1843
- Named after
- Jacques Marquette French Jesuit and explorer (1637–1675)
- Largest city
- Marquette 21,944
- Median household income
- $65,429
- Cities and towns
- 3 plus 9 CDPs
- ZIP codes
- 15
- Time zone
- Eastern
- FIPS code
- 26103
Cities and towns in Marquette County
Marquette County has 3 incorporated cities, towns and villages. Populations count the people living inside Marquette County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Marquette (county seat) | City | 21,944 | |
| Ishpeming | City | 6,205 | |
| Negaunee | City | 4,663 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Harvey | 2,880 | |
| West Ishpeming | 2,851 | |
| K. I. Sawyer | 2,817 | |
| Trowbridge Park | 2,396 | |
| Gwinn | 1,435 | |
| Republic | 519 | |
| Palmer | 309 | |
| Big Bay | 306 | |
| Michigamme | 229 |
ZIP codes in Marquette County
15 ZIP codes reach into Marquette County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 49808
- 49814
- 49818 also Delta County
- 49822 also Alger County
- 49831 also Dickinson County
- 49833
- 49841
- 49849
- 49855
- 49861 also Baraga County
- 49866
- 49871
- 49879 also Iron County
- 49880 also Delta County
- 49885 also Alger County
Population of Marquette County, 2020–2025
Marquette County grew by 1,522 people (+2.3%) between April 2020 and July 2025: 944 more deaths than births and a net gain of 2,344 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 66,542 |
| 2021 | 66,353 |
| 2022 | 67,062 |
| 2023 | 67,556 |
| 2024 | 67,816 |
| 2025 | 68,064 |
Neighboring counties
- Alger County east · 8,641 people
- Baraga County west · 8,169 people
- Keweenaw County northwest · 2,186 people
- Dickinson County south · 25,827 people
- Delta County southeast · 36,582 people
- Menominee County south · 22,941 people
- Iron County southwest · 11,757 people
- Houghton County northwest · 37,842 people
Printable Marquette County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (171 KB)
- PNG (2400 px) (113 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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