Hawthorn Woods is a village in the Fremont and Ela townships of Lake County, Illinois, United States. The population was 7,663 at the 2010 census. The village is located approximately 40 miles (64 km) northwest of downtown Chicago. It was officially incorporated in 1958. Major transportation arteries include Midlothian Road, Old McHenry Road, Gilmer Road, and the Elgin, Joliet and Eastern Railway.