How Many Counties Are in Wisconsin? The Exact Number

Wisconsin’s administrative framework provides a fascinating look into how governance operates at a local level.

Each county serves as an essential building block for public administration, combining both rural and urban characteristics.

Knowing how many counties exist and how they function helps citizens understand the structure that supports education, transportation, law enforcement, and local decision-making.

Now, let us take a look at how many counties are in Wisconsin.

What is the Exact Number?

Confirmation by the State Cartographer’s Office and the WCA officially establishes that Wisconsin has 72 counties.

Counties in Wisconsin differ remarkably in terms of population, land area, and lifestyle. Large metropolitan centers and small rural regions both play crucial roles in shaping Wisconsin’s social and economic character.

Urban counties such as Milwaukee, Dane, and Waukesha are densely populated and host major business districts, universities, and transportation hubs.

On the other hand, there are rural counties like Pepin, Buffalo, and Rusk that have farming traditions, forested areas, and tight-knit communities where agriculture remains central to daily life.

Every county operates under a local government structure, generally overseen by an elected county board. This governing body supervises public safety, transportation infrastructure, social services, elections, and property records.

Colorful mosaic-style map illustration of Wisconsin and surrounding areas, showing counties in shades of red, orange, and yellow
Wisconsin has 72 counties, established for local governance, with Milwaukee County being the most populous
Residents can better appreciate how their tax dollars are spent and how county-level decisions influence their neighborhoods through:

  • Local road maintenance and snow removal.
  • Public health and emergency services.
  • Election management and record keeping.
  • Parks, recreation, and community facilities.

When it comes to the counties themselves, here are all of them:.

County County Seat Region
Adams County Friendship Western
Ashland County Ashland Northwest
Barron County Barron West Central
Bayfield County Washburn Northwest
Brown County Green Bay East Central
Buffalo County Alma Western
Burnett County Siren Northwest
Calumet County Chilton East Central
Chippewa County Chippewa Falls West Central
Clark County Neillsville West Central
Columbia County Portage Southern
Crawford County Prairie du Chien Southern
Dane County Madison Southern
Dodge County Juneau Southern
Door County Sturgeon Bay East Central
Douglas County Superior Northwest
Dunn County Menomonie West Central
Eau Claire County Eau Claire West Central
Florence County Florence North Central
Fond du Lac County Fond du Lac East Central
Forest County Crandon North Central
Grant County Lancaster Southern
Green County Monroe Southern
Green Lake County Green Lake Southern
Iowa County Dodgeville Southern
Iron County Hurley Northwest
Jackson County Black River Falls Western
Jefferson County Jefferson Southern
Juneau County Mauston Western
Kenosha County Kenosha Southeast
Kewaunee County Kewaunee East Central
La Crosse County La Crosse Western
Lafayette County Darlington Southern
Langlade County Antigo North Central
Lincoln County Merrill North Central
Manitowoc County Manitowoc East Central
Marathon County Wausau North Central
Marinette County Marinette North Central
Marquette County Montello Western
Menominee County Keshena North Central
Milwaukee County Milwaukee Southeast
Monroe County Sparta Western
Oconto County Oconto North Central
Oneida County Rhinelander North Central
Outagamie County Appleton East Central
Ozaukee County Port Washington Southeast
Pepin County Durand West Central
Pierce County Ellsworth West Central
Polk County Balsam Lake Northwest
Portage County Stevens Point North Central
Price County Phillips Northwest
Racine County Racine Southeast
Richland County Richland Center Southern
Rock County Janesville Southern
Rusk County Ladysmith Northwest
Sauk County Baraboo Southern
Sawyer County Hayward Northwest
Shawano County Shawano North Central
Sheboygan County Sheboygan East Central
St. Croix County Hudson West Central
Taylor County Medford Northwest
Trempealeau County Whitehall Western
Vernon County Viroqua Western
Vilas County Eagle River North Central
Walworth County Elkhorn Southeast
Washburn County Shell Lake Northwest
Washington County West Bend Southeast
Waukesha County Waukesha Southeast
Waupaca County Waupaca North Central
Waushara County Wautoma North Central
Winnebago County Oshkosh East Central
Wood County Wisconsin Rapids North Central

Largest and Smallest Counties by Area

Simplified red and white map showing Wisconsin and Michigan divided into counties, highlighting county boundaries
Wisconsin’s largest county by area is Marathon County (1,576 square miles), while the smallest is Ozaukee County (233 square miles)

County size greatly impacts how local governments allocate resources, manage transportation systems, and encourage economic activity.

Marathon County ranks as Wisconsin’s largest, covering about 1,545 square miles of land.

Its economy blends agriculture, paper production, and manufacturing, while outdoor spaces attract recreation enthusiasts throughout the year.

At the smaller end, Pepin County holds the title of smallest by land area, covering roughly 232 square miles. Its compact size makes for closely connected towns and a strong sense of local cooperation.

When legal boundaries include water areas, Ozaukee County becomes the smallest, demonstrating how measurement methods influence classification.

Geographical size directly affects each county’s priorities:

  • Large counties focus on maintaining extensive road networks, managing vast agricultural land, and balancing conservation with growth.
  • Small counties concentrate on efficient public services, small-scale infrastructure, and fostering community engagement.

Wisconsin’s range of county sizes contributes to its administrative complexity, where each area finds a strategy that fits its geography and population density.

County Demographics and Population Trends

Population statistics highlight clear distinctions between Wisconsin’s counties. Dane County, home to Madison, has seen continuous growth, adding approximately 78,956 residents between 2010 and 2022.

The increase reflects expansion in the technology, education, and healthcare sectors.

In contrast, Milwaukee County experienced a decrease of 29,628 residents, largely due to suburban migration, housing costs, and shifting employment patterns.

A noticeable demographic change lies in the rising proportion of older residents. Individuals aged 65 and over form the fastest-growing group, prompting county officials to expand healthcare services and senior housing.

Rural counties, in particular, face workforce shortages as younger residents relocate to urban centers for education and professional opportunities.

Main demographic highlights include:

  • Dane County: Rapid expansion linked to economic diversification and educational opportunities.
  • Milwaukee County: Population decline paired with continued cultural and industrial significance.
  • Aging population: Growth in older residents driving healthcare, transportation, and community support reforms.

How Counties Are Grouped in Wisconsin

Grouping counties into regions helps state and local leaders coordinate economic, social, and environmental goals.

Wisconsin’s 72 counties are commonly divided into Southeast, Southern, Central, Western, and Northwest regions.

Regional examples include:

  • Southeast Wisconsin: Home to Milwaukee, Waukesha, and Racine counties, forming an industrial and commercial hub with major highways and port access.
  • Southern Wisconsin: Encompasses Dane, Rock, and Green counties, marked by educational institutions and agricultural innovation.
  • Central Wisconsin: Includes Marathon, Portage, and Wood counties, where manufacturing and paper industries drive local economies.
  • Western Wisconsin: Features La Crosse and Trempealeau counties, known for dairy farming, river valleys, and university towns.
  • Northwest and Northern Wisconsin: Includes Vilas, Ashland, and Bayfield counties, emphasizing tourism, forestry, and recreation.
Wisconsin County Population Changes (2010-2022)
Wisconsin counties show diverse population trends, with growth in Dane County contrasting with decline in Milwaukee County, alongside a rising older population.

Organizing counties by region promotes cooperation on shared issues such as infrastructure development, transportation planning, education initiatives, and workforce programs.

Through these collaborations, Wisconsin continues to strengthen its counties’ collective role in the state’s progress.

Final Thoughts

Wisconsin’s 72 counties together form the backbone of the state’s organization, ensuring that local voices shape public policy, infrastructure, and community development.

Each county, regardless of size or population, contributes something meaningful, urban centers drive innovation and growth, while rural regions preserve heritage and natural beauty.

Recognizing how these local governments operate gives a better sense of how deeply community involvement influences everyday life across the state.