The value of all ranches, farms, hunting land and other rural land and acreage for sale in Hardin County recently was nearly $11 million, representing a combined 365 acres of land for sale in Hardin County. Hardin County ranks 74th in the Buckeye State for the combined amount of land currently advertised for sale. Of all locations in Hardin County with land and rural real estate for sale, Kenton featured the most land for sale. Hardin County is Ohio's 39th biggest county (470 square miles). It's located in the Central Ohio region of the state.