Trenton is a city in Todd County, Kentucky, United States. The population was 419 at the 2000 census. Settled as Lewisburg in 1796, the city was renamed after Trenton, New Jersey in 1819.
Trenton is located at 36°43′24″N 87°15′40″W / 36.72333°N 87.26111°W / 36.72333; -87.26111 (36.723246, -87.261209).
According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.5 km²), all of it land.