Gurnee () is a village in Lake County, Illinois, United States. Its population was 31,295 as of the 2010 census. It borders the city of Waukegan, and is a popular tourist attraction within the Chicago metropolitan area. Best known for being the location of Six Flags Great America and Gurnee Mills, the village sees an average of over 26 million visitors annually.
Early settlers in the Gurnee area came by foot horseback and by "Prairie Schooners" drawn by oxen or via the Erie Canal and the Great Lakes. They came from the town of Warren, New York, which was named in honor of Major General Joseph Warren, killed at the Battle of Bunker Hill. Warren Township, formed in 1850, was also named after him. The first settlement of Warren Township commenced in 1835 in the vicinity of the Aux Plaines River (now the Des Plaines River).
In 1835-36, a land company from New York State erected a Community House (site of the old Gurnee Grade School) to accommodate families while they were locating and getting government land grants to their farms. Near the Community House, there was a Ford used by the Potowatomi Indians for crossing the river. A floating log bridge was built in 1842.