State Trunk Highway 50 is a 44.43-mile (71.50 km) state highway in Walworth and Kenosha counties in Wisconsin, United States, that runs from Wisconsin Highway 11 (WIS 11) in Delavan east to Wisconsin Highway 32 (WIS 32) in Kenosha. The highway is maintained by the Wisconsin Department of Transportation.

Walworth County is a county located in the U.S. state of Wisconsin. As of the 2020 census, the population was 106,478. Its county seat is Elkhorn. The county was created in 1836 from Wisconsin Territory and organized in 1839. It is named for Reuben H. Walworth. Walworth County comprises the Whitewater-Elkhorn, WI Micropolitan Statistical Area and is included in the Milwaukee-Racine-Waukesha, WI Combined Statistical Area. Lake Geneva, the University of Wisconsin-Whitewater, and Alpine Valley Resort, and Music Theatre are located in Walworth County.