County Maps US

Marinette County, Wisconsin

A county in Wisconsin, ranked 36 of 72 by population.

CountyFIPS 55075

Within Wisconsin
Marinette County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Marinette, the county seat, located via the 2025 Census Gazetteer.

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Population
42,574
+687 (+1.6%) since 2020
Land area
1,399
square miles. A further 9.7% of the total area is water
Population density
30.4
people per square mile, computed rather than published
County seat
Marinette
Seat of county government.
Established
1879
146 years ago
Largest city
Marinette city
Population 11,168.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Marinette County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Marinette County, Wisconsin from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 652 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Marinette County ranks

Position among the 72 counties of Wisconsin, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn WisconsinNationally
Population42,57436th of 721,144th of 3,144
Land area1,399 sq mi3rd of 72431st of 3,144
Population density30.4 per sq mi52nd of 721,918th of 3,144
Median household income$63,80960th of 721,721st of 3,143

Full data for Marinette County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population42,574Vintage 2025 Population Estimates
Population in 202041,887Vintage 2025 Population Estimates
2020 estimates base?41,874Vintage 2025 Population Estimates
Land area1,399 sq mi2025 Gazetteer Files
Water area150.5 sq mi2025 Gazetteer Files
Total area1,550 sq mi2025 Gazetteer Files
Population density?30.4 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$63,809American Community Survey 2020-2024 5-Year Estimates
Median home value$158,600American Community Survey 2020-2024 5-Year Estimates
Median age48.7American Community Survey 2020-2024 5-Year Estimates
Households19,051American Community Survey 2020-2024 5-Year Estimates
Housing units29,484American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-197
350 births, 547 deaths
Net migration
+388
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Marinette County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Menominee CountyMichigan88 mi22,941
Oconto CountyWisconsin75 mi40,195
Door CountyWisconsin32 mi30,616
Forest CountyWisconsin24 mi9,574
Florence CountyWisconsin22 mi4,748
Dickinson CountyMichigan16 mi25,827

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 72 counties of Wisconsin

Open the interactive Wisconsin county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.