Red Bank is an unincorporated community and census-designated place (CDP) in Lexington County, South Carolina, United States.

[6] It is bordered to the north by Lexington, the county seat, and to the south by the White Knoll CDP.

Platt Springs Road (South Carolina Highway 602 east of SC-6) forms the border between Red Bank and White Knoll.

Crystal Lake and Saxe-Gotha Millpond are two small reservoirs impounding the creek.

As of the 2020 United States census, there were 10,924 people, 4,137 households, and 3,035 families residing in the CDP.