A total of almost 1,000 acres were listed for sale in Darke County recently, representing a total value of around $14 million in Darke County ranches, farms, hunting land and other rural land and acreage for sale. Darke County ranks 63rd out of 88 counties in the Buckeye State for the combined amount of land currently advertised for sale. Among cities in Darke County with farms, ranches, hunting land and other land for sale, Greenville featured the most land for sale. Manufacturing and related services are the largest economic sectors in Darke County. Darke County is Ohio's 13th largest county (599 square miles). It's located in the Southwest Ohio region of the state.