what county is gaston sc
Sponsored Topics. Gaston is a town in Lexington County, South Carolina, United States. The population was 1,645 at the 2010 census. It is part of the Columbia, South Carolina Metropolitan Statistical Area. Gaston is located at 33Â°48â²57â³N 81Â°6â²3â³W / 33.81583Â°N 81.10083Â°W / 33.81583; -81.10083 (33.815927, -81.100937).