Trenton is a town in Hancock County, incorporated on February 16, 1789 from Plantation Number One East of the Union River.
Named for the Battle of Trenton (New Jersey) in the American Revolution, it houses a visitors' center on Thompson Island between the mainland and Mount Desert Island.
The town gained national attention in 1969 when it turned down a major industrial development fearing the resulting pollution. The plan involved an aluminum smelting facility and an atomic power plant.
Just south of Ellsworth, its long shore on the Union River Bay is unusually smooth compared to the indented coastlines of towns to the east.
