Chardon is a city in Geauga County, Ohio, United States, and its county seat. The population was 5,242 at the 2020 census. Chardon is located about 10 mi (16 km) south of Lake Erie within the "snow belt" of the Great Lakes and is part of the Cleveland metropolitan area. It is the only incorporated city in Geauga County and includes land that was once part of Chardon, Hambden, and Munson townships.