There was a total of nearly $939 million of farmsand rural real estate for sale in Charleston County, South Carolina, recently on Land.com. The total size of all Charleston County land for sale was 6,000 acres. Charleston County ranks eighth out of 46 counties in the state for the combined amount of land currently advertised for sale. There were two properties listed as sold in Charleston County through the Land Network Comparable Sales Program. This represented a total value of $2,292,500. Among cities in Charleston County with farms and rural land for sale, Johns Island had the most land for sale. Government and state-level services are the main economic drivers in Charleston County. Charleston County is the largest county in South Carolina (1,357 square miles). It's located in the Low Country South Carolina region of the state.