Marlboro County is a county located in the Pee Dee region on the northern border of the U.S. state of South Carolina. As of the 2020 census, its population was 26,667. Its county seat is Bennettsville. The Great Pee Dee River runs through it.
Country: United States
State: South Carolina
Founded: 1785
Named for: John Churchill, 1st Duke of Marlborough
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