Wisconsin's 1st congressional district is a congressional district of the United States House of Representatives in southeastern Wisconsin, covering Kenosha County, Racine County, and most of Walworth County, as well as portions of Rock County and Milwaukee County. The district's current Representative is Republican Bryan Steil.

Kenosha County is located in the southeastern corner of the U.S. state of Wisconsin. The population was 169,151 as of the 2020 census, making it the eighth most populous county in Wisconsin. The county shares the same name as its county seat, the city of Kenosha, the fourth largest city in Wisconsin. Kenosha County is part of the Chicago metropolitan area, the fourth most-populous metropolitan area in North America. Kenosha County is situated on the southwestern shore of Lake Michigan.