Sussex is a village in Waukesha County, Wisconsin, United States, about 19 miles northwest of Milwaukee and 9 miles north of Waukesha. The village is 7.24 square miles at an elevation of 930 feet. The

Waukesha County is a county in the U.S. state of Wisconsin. As of the 2020 United States Census, the population was 406,978, making it the third-most populous county in Wisconsin. Its median income of