Knowlton (CDP), Marathon County, Wisconsin: Place Profile

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The Knowlton CDP first appears as a census geography in the 2010 census, when it counted 120 people.

Knowlton is a census-designated place (CDP) in Marathon County, Wisconsin, recorded by the Census Bureau as Knowlton CDP (GEOID 5540125, PLACENS 02586514).

The Knowlton CDP is a statistical area with no government of its own (Census functional status S); it lies inside the Town of Knowlton, which governs it.

The Knowlton CDP (GEOID 5540125, 94 people in 2020) is a different geography from the Town of Knowlton (county subdivision GEOID 5507340150, 1,984 people in 2020), which surrounds it.

The CDP covers about 1.0 square mile of land and 0.406 square miles of water, centered near 44.718188, -89.680363.

GNIS records Knowlton as a named populated place in Marathon County at 44.7163564, -89.6826221.

The community sits on the shore of Lake Du Bay, a Wisconsin River reservoir that GNIS places in Marathon County at 44.7144783, -89.695249.

Wisconsin Highway 34 passes through Knowlton, and its northern terminus is just north of the community.

The 2020 census counted 94 residents and 49 housing units in the Knowlton CDP.

The CDP's population was 120 at the 2010 census.

The ACS 2019-2023 5-year population estimate for the Knowlton CDP is 71 (margin of error +/-25).

Neither the Census subcounty estimates file nor the Wisconsin DOA municipal estimates carry a figure for the CDP, because it is not a municipality.

The ACS 2019-2023 5-year median age in the CDP is 62.4 years (margin of error +/-9.9).

The ACS 2019-2023 5-year median household income in the CDP is $49,375 (margin of error +/-$12,216).

The ACS 2019-2023 5-year median value of owner-occupied homes in the CDP is $200,000 (margin of error +/-$133,398).

Local government for the CDP is the Town of Knowlton, a three-member town board of a chairman and two supervisors, with a clerk and treasurer.

Brian M. Feit is Town Chairman, Kevin Brown and Robin Morris are Supervisors, Alan Fochs is Town Clerk and Rosita Slembarski is Town Treasurer.

Regular Town Board meetings are on the second and fourth Mondays of the month at 6:30 p.m. at the Knowlton Town Hall, 205220 Old Highway 51, Mosinee; the town calendar lists meetings on September 14 and 28, 2026.

The Town Hall is at 205220 Old Highway 51, Mosinee, WI 54455 (phone 715-693-9512), and it is also the polling place.

Town agendas and minutes post to the Agendas & Minutes page of townofknowltonwi.us, filterable by Town Board and Planning / Zoning Committee, and residents can subscribe to email or text alerts for new postings.

Property tax payments go to the town through January 31 and to the Marathon County Treasurer in Wausau after that date.

The town points residents to the Mosinee School District, a PK-12 district of 3 schools with 1,902 students in 2024-25, based at 146001 State Highway 153, Mosinee.

Marathon County had 3,436 business establishments and 65,770 paid employees in 2023, including 18,923 in manufacturing and 10,570 in health care and social assistance.

WSAW NewsChannel 7 in Wausau publishes a local news index covering central Wisconsin.

The town points residents to the Marathon County Library.

Knowlton addresses, including the Town Hall and Lake DuBay Lions Park, use Mosinee, WI 54455; no post office in Knowlton was confirmed.

Wikipedia's Knowlton article carries an image of St. Francis Xavier Catholic Church at Knowlton.

Lake DuBay Lions Park at 203701 County Hwy DB has a universal, accessible kayak launch at 44.715466, -89.679127, plus restrooms, water, a picnic area, playground, grills and a shelter.

The DNR lists Lake Du Bay as a 4,649-acre lake in Portage and Marathon counties with a maximum depth of 30 feet, four boat landings and a public beach; walleye are abundant, with panfish, bass, northern pike and musky also present.

The Parks Foundation lists the paddling route from Lake Du Bay Lions Park to the Portage County Park Road landing at 5.00 miles, about 2.5 hours.

In winter, Lake DuBay is used for ice racing in the Winter Thunder program.

A dam on Lake DuBay generates hydroelectric power.