Lake County
US county in Illinois
Lake County is situated in the northeastern corner of the U.S. state of Illinois, along the shores of Lake Michigan. As of the 2020 census, it has a population of 714,342, making it the third-most populous county in Illinois. Its county seat is... Wikipedia
Population: 709,150 (2022)
Cities: Waukegan, Round Lake, Gurnee, and more
Congressional districts: 5th, 9th, 10th, 11th
Founded: March 1, 1839
Largest city: Waukegan
Named for: Lake Michigan