The combined value of farms, rural land, hunting land and other land for sale in South Carolina's Barnwell County recently on Land.com was $28 million. This represents approximately 2,000 acres of farms, hunting land and other rural land and acreage for sale in Barnwell County. Barnwell County ranks 38th out of 46 counties in South Carolina for the combined amount of land currently advertised for sale. There were two properties listed as sold in Barnwell County through the Land Network Comparable Sales Program. This represented a total value of $337,000. Barnwell had the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Barnwell County. Barnwell County is South Carolina's 30th largest county (557 square miles). It's located in the Midlands South Carolina region of South Carolina.