Lake Geneva is a city in the U.S. state of Wisconsin. Located in Walworth County and situated on Geneva Lake, it was home to 8,277 people a…Lake Geneva is a city in the U.S. state of Wisconsin. Located in Walworth County and situated on Geneva Lake, it was home to 8,277 people as of the 2020 census, up from 7,651 at the 2010 census. It is located 40 miles southwest of Milwaukee and 65 miles northwest of Chicago.