Red Hill is a census-designated place (CDP) in Horry County, South Carolina, United States.

[6] It is bordered to the north by the city of Conway, the county seat, and to the south by Socastee.

U.S. Route 501 passes through the northern part of Red Hill, connecting Conway to the north with Myrtle Beach, 12 miles (19 km) to the southeast.

South Carolina Highway 544 runs north–south the length of Red Hill, connecting Conway with Socastee.

The west side of Red Hill is bordered by the Waccamaw National Wildlife Refuge.