South Carrollton is a home rule-class city in Muhlenberg County, Kentucky, United States. The population was 141 at the 2020 census, down from 184 in 2010. Founded as "Randolph Old Farm" in 1838, an early pioneer changed the name of the city to honor his son, Carroll. The name was prefixed with "South" in order to distinguish it from the city of Carrollton.