Hessville, OhioHessville is an unincorporated community and census-designated place in Washington Township, Sandusky County, Ohio, United States. The population was 174 at the 2020 census.HistoryHessville was laid out in 1837 by David Hess, and named for him. A post office called Hessville was established in 1883, and remained in operation until 1903.