Hancock county. Trenton is situated on a navigable passage between Frenchman's bay on the E., Union river on the W., and N. of the island town of Eden. It possesses great advantages for navigation, and a large portion of its people is engaged in ship building, the coasting trade, and fishery. Incorporated in 1789. Population, in 1837, 924. Trenton is 7 miles S. by E. from Ellsworth.