Gurnee is a village in Lake County, Illinois, United States. The population was 28,834 at the 2000 census, and estimated to be 30,772 in 2005. The village borders the city of Waukegan and is considered a part of the Chicago metropolitan area. Gurnee is perhaps best known for being the location of Six Flags Great America, a theme park. The village is home to many Chicago Bears players, including NFL recordholder Devin Hester, Gurnee has benefited from its location as the midway point between Milwaukee and Chicago.
Gurnee is located at 42°22′N 87°56′W / 42.367°N 87.933°W / 42.367; -87.933 (42.3737, -87.9344).
According to the United States Census Bureau, the village has a total area of 13.4 square miles (35 km2), of which, 13.4 square miles (35 km2) is land and 0.07% is water. Gurnee is located on the banks of the Des Plaines River and is split by Interstate 94 which divides the village into East (old) and west (new) sides.