Founded in 1785, Marlboro County is one of 46 counties in the state of South Carolina. Historically, Marlboro County was formed from Cheraws District. The city of Bennettsville is the county seat. With FIPS code of 69, Marlboro County has a population of 26,382 and area of 485 square miles (1,256 km2).
List of all cities in Marlboro County, SC alphabetically
| City/Town | Postal Code | Area Code |
| Bennettsville, SC | 29512 | 843 |
| Blenheim, SC | 29516 | 843 |
| Clio, SC | 29525 | 843 |
| McColl, SC | 29570 | 843 |
| Tatum, SC | 29594 | 843 |
| Wallace, SC | 29596 | 843 |