Map of Wisconsin Counties
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).