There are a total of 72 counties in the state of Wisconsin. Among them, Brown County is the oldest one (established in 1818) while Menominee County is the youngest (established in 1959). With population of 947,735, Milwaukee County is the most populated. The biggest county by land area is Marathon County (4,001 km2) and the smallest is Pepin County (601 km2). Below please see all Wisconsin counties which are listed in alphabetical order.
- Adams County, WI
- Ashland County, WI
- Barron County, WI
- Bayfield County, WI
- Brown County, WI
- Buffalo County, WI
- Burnett County, WI
- Calumet County, WI
- Chippewa County, WI
- Clark County, WI
- Columbia County, WI
- Crawford County, WI
- Dane County, WI
- Dodge County, WI
- Door County, WI
- Douglas County, WI
- Dunn County, WI
- Eau Claire County, WI
- Florence County, WI
- Fond du Lac County, WI
- Forest County, WI
- Grant County, WI
- Green County, WI
- Green Lake County, WI
- Iowa County, WI
- Iron County, WI
- Jackson County, WI
- Jefferson County, WI
- Juneau County, WI
- Kenosha County, WI
- Kewaunee County, WI
- La Crosse County, WI
- Lafayette County, WI
- Langlade County, WI
- Lincoln County, WI
- Manitowoc County, WI
- Marathon County, WI
- Marinette County, WI
- Marquette County, WI
- Menominee County, WI
- Milwaukee County, WI
- Monroe County, WI
- Ocoto County, WI
- Oneida County, WI
- Outagamie County, WI
- Ozaukee County, WI
- Pepin County, WI
- Pierce County, WI
- Polk County, WI
- Portage County, WI
- Price County, WI
- Racine County, WI
- Richland County, WI
- Rock County, WI
- Rusk County, WI
- Saint Croix County, WI
- Sauk County, WI
- Sawyer County, WI
- Shawano County, WI
- Sheboygan County, WI
- Taylor County, WI
- Trempealeau County, WI
- Vernon County, WI
- Vilas County, WI
- Walworth County, WI
- Washburn County, WI
- Washington County, WI
- Waukesha County, WI
- Waupaca County, WI
- Waushara County, WI
- Winnebago County, WI
- Wood County, WI
Map of Wisconsin Counties
