McColl is a town in Marlboro County, South Carolina, United States. It lies in the state's Pee Dee region, 8 miles (13 km) from the North Carolina border. The population was 2,174 at the 2010 census.

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.