Hambden Township is one of the sixteen townships of Geauga County, Ohio, United States. As of the 2020 census the population was 4,676, up from 4,024 at the 2000 census. A small part of the city of Chardon, the county seat of Geauga County, borders southwestern Hambden Township. The unincorporated settlement of Hambden is located in the center, a…Hambden Township is one of the sixteen townships of Geauga County, Ohio, United States. As of the 2020 census the population was 4,676, up from 4,024 at the 2000 census. A small part of the city of Chardon, the county seat of Geauga County, borders southwestern Hambden Township. The unincorporated settlement of Hambden is located in the center, at the intersection of U.S. Route 6 and State Route 608.