City of Mosinee, Marathon County, Wisconsin: Place Profile

The municipality is the City of Mosinee, an incorporated city in Marathon County, Wisconsin (Census place GEOID 5554500).

The City of Mosinee is a separate municipality from the Town of Mosinee, which had a 2020 census count of 2,216.

The City of Mosinee covers 7.841 square miles of land and 0.867 square miles of water, with an internal point near 44.79182, -89.684328.

The city's own website describes a total area of 8.54 square miles, of which 7.77 are land and 0.77 are water.

Mosinee sits between Wausau and Stevens Point, and Interstate 39 and State Highway 153 intersect in the city.

The city lies on the Wisconsin River, with the Mosinee Mill Dam and the 1,377-acre Mosinee Flowage above it.

The 2020 census counted 4,452 residents in the City of Mosinee.

The Wisconsin DOA January 1, 2025 official estimate for the City of Mosinee is 4,578.

The Census Bureau's July 1, 2024 estimate for Mosinee city is 4,531 (2020 estimates base 4,456).

The ACS 2019-2023 5-year estimate of total population is 4,492 (margin of error +/-17).

The ACS 2019-2023 5-year median age in the City of Mosinee is 33 years (margin of error +/-4.3).

The ACS 2019-2023 5-year median household income is $71,314 (margin of error +/-$10,100).

The ACS 2019-2023 5-year median value of owner-occupied homes is $150,000 (margin of error +/-$22,567).

Mosinee has a mayor and a six-member common council whose alderpersons represent eight wards, with a city administrator overseeing daily operations.

The Mayor of Mosinee is Tom Helbach, whose term expires in April 2027.

Mark Gewiss is the alderperson for Wards 1 and 8 (term expires April 2027).

Nelson Pasha, Jr. is the alderperson for Ward 2 (term expires April 2028).

Robert Stephens is the alderperson for Ward 3 (term expires April 2027).

Todd Priest is the alderperson for Ward 4 (term expires April 2028).

Mark Viau is the alderperson for Ward 5 (term expires April 2027).

Doug Mielke is the alderperson for Wards 6 and 7 (term expires April 2028).

Jeff Gates has served as Mosinee's City Administrator since August 2000.

Bruce R. Jamroz is City Clerk (since April 1999) and City Treasurer (since May 2006); the clerk's office handles elections, records, agendas, minutes and licenses.

City Hall is at 225 Main Street, Mosinee, WI 54455; the main line is 715-693-2275 and the general email is [email address]

The city's official website is mosinee.wi.us.

In 2026 the Common Council's regular meetings fall on the second Monday of the month at 7:30 p.m., preceded the same evening by the Public Works, Building, Personnel & Finance and Public Safety committees.

Agendas, packets, minutes and meeting video for the council and its boards post on the city's IQM2 portal at mosineecitywi.iqm2.com.

The Mosinee Police Department is led by Police Chief Kenneth Grams; its non-emergency line is 715-693-2000.

The city is served by the Mosinee School District (NCES 5509960), a PK-12 district of 3 schools with 1,902 students in 2024-25 and a student/teacher ratio of 13.42.

Mosinee's public schools are Mosinee Elementary (600 12th St), Mosinee Middle (700 High St) and Mosinee High (1000 High St).

The Creske Community Center, with a swimming pool, auditorium and meeting rooms, sits between the middle and high schools.

The district scheduled a ribbon cutting and open house for completed construction at Mosinee High School on September 25, 2026.

The city's Central Wisconsin Business Park sits beside Interstate 39/U.S. 51 and the Central Wisconsin Airport, and the city reports about 1,200 people employed there.

Business park tenants named by the city include Greenheck Fan, FedEx Ground, FedEx Air, WOW Logistics, Liberty Tire Recycling, American Asphalt, Valley Communities Credit Union and the Indianhead Golf Course.

The city traces its economy from logging to papermaking: its sawmill became a paper mill and power company that the city says are still in business.

The Mosinee Area Chamber of Commerce and the city jointly formed the Mosinee Area Economic Development Committee, which produced the Mosinee Comprehensive Economic Development Strategy.

Marathon County had 3,436 business establishments and 65,770 paid employees in 2023, with manufacturing the largest sector at 18,923 employees.

The Mosinee Times is a weekly newspaper published Thursdays by The Mosinee Times Publishing, Inc., at 407 Third Street in Mosinee.

Two FM stations are licensed to Mosinee: WOZZ (94.7 MHz, licensee WRIG, Inc.) and translator W272BT (102.3 MHz, licensee WRVM, Inc.).

The Marathon County Public Library's Mosinee Branch, the Joseph Dessert Library, is at 123 Main Street.

Fire and ambulance service comes from the Mosinee Fire District, which serves the City of Mosinee and the Towns of Mosinee, Knowlton and Bergen across about 120 square miles with 3 full-time staff and 45 paid-on-call members.

The district's ambulance is licensed at the EMT level and can flex to AEMT when staffing allows, with advanced life support arranged through neighboring agencies.

The Mosinee Fire District transports patients to Aspirus Hospital in Wausau, Marshfield Medical Center in Weston and Marshfield, and Aspirus and Marshfield Medical Center-River Region hospitals in Stevens Point.

Central Wisconsin Airport (CWA), which the city says has daily commercial flights to Chicago, Detroit and Minneapolis, adjoins the city's business park.

Mosinee's ZIP code is 54455; a USPS retail post office in the city was not confirmed from a USPS source this session.

The city operates separate East and West water systems, each with its own 2025 drinking water quality report.

The city maintains twelve neighborhood and community parks, several kept up by community groups through an Adopt A Park Program.

River Park is a 27-acre park with about 3,400 feet of Wisconsin River shoreline, two boat landings and an accessible fishing pier on the north side of Main Street downtown.

The Wisconsin Riverwoods Multi-Use Trail (listed by the city as the Purple Circle Recreational Trail) is a 10-foot paved path running about 1.5 miles from Main Street to Edgewood Park, built in 2009 and 2016.

Canoe Portage Park lets paddlers carry around the Mosinee Mill Dam and gives boat access to the Wisconsin River and the Mosinee Flowage.

Mosinee Hill is a named summit in Marathon County, and the city calls it a forested landmark visible from town.

The Riedel-Redmond Nature Preserve offers a hiking path through an oak forest at the end of Ranger Street off Old Highway 51.

Recreation Center Park, a 9-acre park on 11th Street, holds an enclosed event field used for hockey and free skating in winter and a lighted softball field.

River Park hosts the city's Fourth of July fireworks as well as concerts and historical fairs through the warmer months.

The city dates regional settlement to 1790, when French trapper John Lewis DuBay wintered near present-day Knowlton, and to a fur trading post his son established on the Wisconsin River in 1834.

The settlement was first known as Little Bull Falls and was renamed Mosinee in 1857 in honor of an Ojibwe chief.

Mosinee incorporated as a village in 1889 and as a city on April 7, 1931.

On May 1, 1950, the American Legion staged a mock Communist takeover of Mosinee as a civic pageant; Mayor Ralph E. Kronenwetter collapsed that night and died days later.

The Joseph Dessert Library and the Karl Mathie House in Mosinee were both listed on the National Register of Historic Places on May 1, 1980.

The Joseph Dessert Library building was dedicated on February 11, 1899, and joined the Marathon County Public Library in 1974.