Land for sale in Ohio's Jackson County recently totaled around $36 million and nearly 3,000 acres. Jackson County ranks 36th in the state for the total acreage of land currently advertised for sale. Jackson featured the most land for sale. Manufacturing and related services are the largest economic sectors in Jackson County. Jackson County is the 60th largest county (421 square miles) in Ohio. It's located in the Southeast Ohio region of the state.