Trenton is a town in Edgefield County, South Carolina, United States. The population was 226 at the 2000 census. It is part of the Augusta, Georgia metropolitan area.
Trenton is located at 33°44′23″N 81°50′25″W / 33.73972°N 81.84028°W / 33.73972; -81.84028 (33.739721, -81.840208).
According to the United States Census Bureau, the town has a total area of 1.3 square miles (3.4 km²), of which, 1.3 square miles (3.4 km²) of it is land and 0.76% is water.