Marlboro County is in Pee Dee South Carolina. Of the 46 counties in the Palmetto State, Marlboro County is 37th in terms of its size (310,699 acres). Marlboro County, South Carolina, includes 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of farmsand rural real estate for sale here was almost $4 million. The average price of residential land for sale in Marlboro County was $103,284. Browse all residential land and rural property for sale in South Carolina to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.