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Midwest county atlas

Wisconsin county map

Explore all 72 counties. Select a county to see its map, or download a copy for your next project.

2025 Census boundaries72 mapped unitsCapital: Madison
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Boundary map 100%
Labelled map of Wisconsin counties Adams CountyAshland CountyBarron CountyBayfield CountyBrown CountyBuffalo CountyBurnett CountyCalumet CountyChippewa CountyClark CountyColumbia CountyCrawford CountyDane CountyDodge CountyDoor CountyDouglas CountyDunn CountyEau Claire CountyFlorence CountyFond du Lac CountyForest CountyGrant CountyGreen CountyGreen Lake CountyIowa CountyIron CountyJackson CountyJefferson CountyJuneau CountyKenosha CountyKewaunee CountyLa Crosse CountyLafayette CountyLanglade CountyLincoln CountyManitowoc CountyMarathon CountyMarinette CountyMarquette CountyMenominee CountyMilwaukee CountyMonroe CountyOconto CountyOneida CountyOutagamie CountyOzaukee CountyPepin CountyPierce CountyPolk CountyPortage CountyPrice CountyRacine CountyRichland CountyRock CountyRusk CountySauk CountySawyer CountyShawano CountySheboygan CountySt. Croix CountyTaylor CountyTrempealeau CountyVernon CountyVilas CountyWalworth CountyWashburn CountyWashington CountyWaukesha CountyWaupaca CountyWaushara CountyWinnebago CountyWood County
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2025 U.S. Census boundaries. Zoom to reveal more names. Drag to pan when zoomed; use arrow keys, + and − with the map focused.

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SVG

SVG is editable vector artwork. PNG is a high-resolution image. PDF uses landscape Letter pages, with a separate key when needed.

Downloads contain the complete boundary map, independent of zoom. Crowded names use a numbered key. Numbered quiz maps use the county list / answer key (CSV). Boundary data (GeoJSON) · Reuse with source credit.

Roads, terrain & aerial imagery

Explore Wisconsin with a county boundary overlay. Choose a view to load the interactive map.

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Street names, terrain, or aerial photography with the county boundary in view.

Backgrounds load from OpenStreetMap or USGS only when selected. Imagery dates and detail vary by location.

Map scope: Use the boundary map for names and shapes, or the interactive background viewer for roads, terrain, and aerial imagery. County boundaries do not identify parcels or ZIP codes.

Wisconsin county geography overview

Wisconsin has 72 counties, which places it 19th among the 50 state and District of Columbia maps in this atlas when ordered by number of county-level units. Their combined 54,168.2 square miles of land place the state 25th by mapped land area.

The average county-level area is 752 square miles, while the median is 753 square miles. The median is often the better description of a typical unit because one or two very large areas can pull the average upward. The five largest units together account for about 13% of the state’s mapped land area.

72county-level units
753 sq mimedian land area
1,545.2 sq milargest unit
17%share of mapped area that is water

Largest and smallest Wisconsin counties

Marathon County is the largest county-level unit by land area at 1,545.2 square miles. It represents about 3% of all mapped land in Wisconsin. At the other end of the range, Pepin County has 232 square miles of land.

Largest by land area

  1. Marathon County1,545.2 sq mi
  2. Bayfield County1,477.9 sq mi
  3. Marinette County1,399.5 sq mi
  4. Douglas County1,304.3 sq mi
  5. Sawyer County1,257.6 sq mi

Smallest by land area

  1. Pepin County232 sq mi
  2. Ozaukee County233 sq mi
  3. Milwaukee County241.5 sq mi
  4. Kenosha County271.8 sq mi
  5. Calumet County318.2 sq mi

Rankings use land area rather than total area. This avoids making coastal or lake counties appear larger solely because their boundaries include extensive water.

Alphabetical list of Wisconsin counties

The table is alphabetical, so it works as a name and FIPS-code reference rather than an area ranking. Every identifier begins with the Wisconsin state FIPS prefix 55. Land and water figures are rounded to one decimal place.

72 county-level areas

Download county data / numbered map key (CSV)
No.NameFIPS codeLand areaWater area
1Adams County55001645.6 sq mi41.8 sq mi
2Ashland County550031,045 sq mi1,247.4 sq mi
3Barron County55005863.1 sq mi26.7 sq mi
4Bayfield County550071,477.9 sq mi563.8 sq mi
5Brown County55009530.1 sq mi85.6 sq mi
6Buffalo County55011675.8 sq mi33.8 sq mi
7Burnett County55013821.6 sq mi58.6 sq mi
8Calumet County55015318.2 sq mi78.8 sq mi
9Chippewa County550171,008.4 sq mi32.8 sq mi
10Clark County550191,209.7 sq mi9 sq mi
11Columbia County55021765.6 sq mi30.4 sq mi
12Crawford County55023570.8 sq mi28.4 sq mi
13Dane County550251,196.5 sq mi41 sq mi
14Dodge County55027875.7 sq mi31.4 sq mi
15Door County55029481.9 sq mi1,888.3 sq mi
16Douglas County550311,304.3 sq mi175.4 sq mi
17Dunn County55033850.2 sq mi13.7 sq mi
18Eau Claire County55035637.9 sq mi7.3 sq mi
19Florence County55037488 sq mi9.3 sq mi
20Fond du Lac County55039719.6 sq mi46.3 sq mi
21Forest County550411,014.3 sq mi32.2 sq mi
22Grant County550431,147.6 sq mi35.8 sq mi
23Green County55045584 sq mi0.5 sq mi
24Green Lake County55047349.5 sq mi30.6 sq mi
25Iowa County55049762.7 sq mi5.4 sq mi
26Iron County55051758.2 sq mi161 sq mi
27Jackson County55053987.9 sq mi12.6 sq mi
28Jefferson County55055556.5 sq mi26.2 sq mi
29Juneau County55057767.1 sq mi38.1 sq mi
30Kenosha County55059271.8 sq mi482.2 sq mi
31Kewaunee County55061342.5 sq mi741.8 sq mi
32La Crosse County55063451.8 sq mi28.2 sq mi
33Lafayette County55065633.6 sq mi1 sq mi
34Langlade County55067870.7 sq mi17.1 sq mi
35Lincoln County55069878.8 sq mi28 sq mi
36Manitowoc County55071589.3 sq mi904.8 sq mi
37Marathon County550731,545.2 sq mi31.1 sq mi
38Marinette County550751,399.5 sq mi150.5 sq mi
39Marquette County55077455.7 sq mi8.8 sq mi
40Menominee County55078357.6 sq mi7.3 sq mi
41Milwaukee County55079241.5 sq mi948.1 sq mi
42Monroe County55081900.9 sq mi7.2 sq mi
43Oconto County55083997.5 sq mi151.4 sq mi
44Oneida County550851,113.9 sq mi122.6 sq mi
45Outagamie County55087637.6 sq mi7.1 sq mi
46Ozaukee County55089233 sq mi883.2 sq mi
47Pepin County55091232 sq mi16.7 sq mi
48Pierce County55093574 sq mi18.7 sq mi
49Polk County55095914.3 sq mi42.1 sq mi
50Portage County55097800.9 sq mi21.9 sq mi
51Price County550991,254.1 sq mi24 sq mi
52Racine County55101332.6 sq mi459.5 sq mi
53Richland County55103586.1 sq mi3.1 sq mi
54Rock County55105718.2 sq mi8 sq mi
55Rusk County55107913.5 sq mi17.3 sq mi
56Sauk County55111831.6 sq mi17.6 sq mi
57Sawyer County551131,257.6 sq mi92.6 sq mi
58Shawano County55115893.2 sq mi16.2 sq mi
59Sheboygan County55117511.5 sq mi759.7 sq mi
60St. Croix County55109722.2 sq mi13 sq mi
61Taylor County55119975.1 sq mi9.5 sq mi
62Trempealeau County55121733 sq mi9 sq mi
63Vernon County55123791.6 sq mi24.8 sq mi
64Vilas County55125857.7 sq mi160 sq mi
65Walworth County55127555.4 sq mi21.2 sq mi
66Washburn County55129797.1 sq mi56.2 sq mi
67Washington County55131430.6 sq mi5 sq mi
68Waukesha County55133549.7 sq mi30.8 sq mi
69Waupaca County55135747.7 sq mi17.5 sq mi
70Waushara County55137626.2 sq mi11.2 sq mi
71Winnebago County55139434.7 sq mi143.9 sq mi
72Wood County55141793 sq mi16.2 sq mi

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, download a PDF from the controls above. Labelled exports use numbered callouts for crowded areas; numbered quiz maps match the alphabetical county list. SVG files keep the boundary lines sharp at larger paper sizes.

Interpreting the water figure: About 17% of the summed mapped area in this state is water. County water area can include coastal waters, bays, lakes, or rivers assigned by the Census boundary file; it is shown separately from land and should not be used to estimate developable land.

Frequently asked questions

How many counties are in Wisconsin?

Wisconsin has 72 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this Wisconsin county map?

Yes. Choose Download / print and select PDF for a landscape Letter page, PNG for an image, or SVG for editable vector artwork. Because the map is SVG, its boundary lines stay sharp when scaled.

What is the largest county in Wisconsin?

Marathon County is the largest by land area in this dataset at 1,545.2 square miles. This is an area ranking, not a population ranking.

What is the smallest county in Wisconsin?

Pepin County is the smallest by land area in this dataset at 232 square miles.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:5,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 27, 2026.