Waukesha County, county in Wisconsin, United States. As of 2020 county had an estimated population of 406,172 inhabitants. The county was created 176 years ago in 1846. Its county seat is "Waukesha".
There are 1 city/town in Waukesha County, WI. The largest city of Waukesha County is Sussex with a population of 11,086.
Cities, Towns, Neighborhoods & Other Populated Places in Waukesha County.
|Sussex||Village in Waukesha County, Wisconsin||Waukesha||11,086|