Marinette County
County
Marinette County Courthouse, Marinette
Location within the U.S. state of Wisconsin
Wisconsin's location within the U.S.
Coordinates: 45°20′N 88°00′W / 45.34°N 88°W / 45.34; -88
Country	United States
State	Wisconsin
Founded	1879
Seat	Marinette
Largest city	Marinette
Area
• Total	1,550 sq mi (4,000 km2)
• Land	1,399 sq mi (3,620 km2)
• Water	151 sq mi (390 km2)  9.7%
Population  (2020)[1]
• Total	41,872
• Estimate  (2023)	42,106
• Density	29.9/sq mi (11.5/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	8th
Website	www.marinettecounty.com

Marinette County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 41,872.^[1] Its county seat is Marinette.^[2] Marinette County is part of the Marinette, WI–MI Micropolitan Statistical Area.

According to the U.S. Census Bureau, the county has a total area of 1,550 square miles (4,000 km²), of which 1,399 square miles (3,620 km²) is land and 151 square miles (390 km²) (9.7%) is water.^[3] It is the third-largest county in Wisconsin by land area and fifth-largest by total area. Part of Marinette County borders Lake Michigan, and this area is home to endemic plants.^[4]

• Dickinson County, Michigan - north
• Menominee County, Michigan - northeast
• Door County - east and southeast, border is in Green Bay
• Oconto County - southwest
• Forest County - west
• Florence County - northwest

• U.S. 8
• U.S. 41
• U.S. 141
• Highway 64
• Highway 180

• Canadian National
• Escanaba and Lake Superior Railroad
• Watco

Crivitz Municipal Airport (FAA LID: 3D1) serves Marinette County and surrounding communities.

As of the census of 2020,^[1] the population was 41,872. The population density was 29.9 people per square mile (11.5 people/km²). There were 29,189 housing units at an average density of 20.9 units per square mile (8.1 units/km²). The racial makeup of the county was 93.4% White, 0.6% Native American, 0.5% Black or African American, 0.4% Asian, 1.1% from other races, and 4.0% from two or more races. Ethnically, the population was 2.6% Hispanic or Latino of any race.

As of the census^[10] of 2000, there were 43,384 people, 17,585 households, and 11,834 families residing in the county. The population density was 31 people per square mile (12 people/km²). There were 26,260 housing units at an average density of 19 units per square mile (7.3 units/km²). The racial makeup of the county was 98.08% White, 0.23% Black or African American, 0.50% Native American, 0.27% Asian, 0.02% Pacific Islander, 0.21% from other races, and 0.69% from two or more races. 0.75% of the population were Hispanic or Latino of any race. 37.8% were of German, 11.7% Polish, 6.4% French and 5.6% American ancestry.

There were 17,585 households, out of which 28.80% had children under the age of 18 living with them, 56.40% were married couples living together, 7.40% had a female householder with no husband present, and 32.70% were non-families. 28.30% of all households were made up of individuals, and 13.30% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.92.

In the county, the population was spread out, with 23.50% under the age of 18, 8.10% from 18 to 24, 25.90% from 25 to 44, 25.00% from 45 to 64, and 17.60% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 97.50 males. For every 100 females age 18 and over, there were 95.00 males.

In 2017, there were 383 births, giving a general fertility rate of 61.2 births per 1000 women aged 15–44, the 30th lowest rate out of all 72 Wisconsin counties.^[11] Additionally, there were 16 reported induced abortions performed on women of Marinette County residence in 2017.^[12]

Tourism is important to many of the communities in Marinette County. The county's two main rivers, the Peshtigo and Menominee, and many lakes, streams, and forests make the area an outdoor destination.

Snowmobiling is popular in the winter, and there is a large network of trails to accommodate the sport.

Dave's Falls are located in Marinette County, near Amberg.

• Marinette (county seat)
• Niagara
• Peshtigo

• Coleman
• Crivitz
• Pound
• Wausaukee

• Amberg
• Dunbar
• Goodman
• Pembine

• Ansul Islands
• Green Island (Wisconsin)
• National Register of Historic Places listings in Marinette County, Wisconsin
• USS Marinette County (LST-953)

• Marinette County government website
• Marinette County map from the Wisconsin Department of Transportation
• Marinette and Menominee Area Chamber of Commerce

45°20′N 88°00′W / 45.34°N 88.00°W / 45.34; -88.00