The value of all land for sale in Washington County, Ohio, recently was around $32 million, representing a combined 1,892 acres of land for sale in Washington County. Washington County ranks 34th out of 88 counties in the Buckeye State for the total number of acres of land currently advertised for sale. There were seven properties listed as sold in Washington County through the Land Network Comparable Sales Program. This represented a total value of $1,077,403. Of all locations in Washington County with farms, ranches, hunting land and other land for sale, Marietta featured the most land for sale. Washington County is one of the ten biggest counties in Ohio (639 square miles). It's located in the Southeast Ohio region of the state.