County Maps US

Marquette County, Wisconsin

A county in Wisconsin, ranked 63 of 72 by population.

CountyFIPS 55077

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

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Population
15,927
+333 (+2.1%) since 2020
Land area
455.7
square miles. A further 1.9% of the total area is water
Population density
35.0
people per square mile, computed rather than published
County seat
Montello
Seat of county government.
Established
1836
189 years ago
Largest city
Montello city
Population 1,447.

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 Marquette 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 Marquette 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 740 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 Marquette 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
Population15,92763rd of 722,040th of 3,144
Land area455.7 sq mi60th of 722,247th of 3,144
Population density35.0 per sq mi44th of 721,796th of 3,144
Median household income$65,68157th of 721,572nd of 3,143

Full data for Marquette County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population15,927Vintage 2025 Population Estimates
Population in 202015,594Vintage 2025 Population Estimates
2020 estimates base?15,595Vintage 2025 Population Estimates
Land area455.7 sq mi2025 Gazetteer Files
Water area8.8 sq mi2025 Gazetteer Files
Total area464.5 sq mi2025 Gazetteer Files
Population density?35.0 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$65,681American Community Survey 2020-2024 5-Year Estimates
Median home value$210,400American Community Survey 2020-2024 5-Year Estimates
Median age50.7American Community Survey 2020-2024 5-Year Estimates
Households6,987American Community Survey 2020-2024 5-Year Estimates
Housing units9,827American 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
-81
131 births, 212 deaths
Net migration
+172
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 4 areas bordering Marquette 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
Green Lake CountyWisconsin31 mi19,305
Adams CountyWisconsin23 mi21,752
Waushara CountyWisconsin21 mi25,223
Columbia CountyWisconsin18 mi58,132

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.