Gurnee is a village in Lake County, in the U.S. state of Illinois. As of the 2020 census, its population was 30,706. Located in the Chicago metropolitan area, it borders the city of Waukegan. It is roughly 40 miles (64 km) north of Chicago and 50 miles (80 km) south of Milwaukee. The village was founded in 1928 and is named after former Chicago mayor Walter S. Gurnee.