Trenton is a town in Hancock County, Maine, United States, near Acadia National Park. The population was 1,481 at the 2010 census. Hancock County-Bar Harbor Airport is located in Trenton.
In January 1969, town voters defeated 144-77 an attempt to build a nuclear power plant and aluminum refinery in Trenton.
According to the United States Census Bureau, the town has a total area of 28.39 square miles (73.53 km2), of which 18.17 square miles (47.06 km2) is land and 10.22 square miles (26.47 km2) is water.
As of the census of 2010, there were 1,481 people, 663 households, and 409 families living in the town. The population density was 81.5 inhabitants per square mile (31.5/km2). There were 1,021 housing units at an average density of 56.2 per square mile (21.7/km2). The racial makeup of the town was 95.3% White, 0.4% African American, 1.6% Native American, 0.4% Asian, 0.2% from other races, and 2.1% from two or more races. Hispanic or Latino of any race were 1.5% of the population.
There were 663 households, of which 23.7% had children under the age of 18 living with them, 46.8% were married couples living together, 8.3% had a female householder with no husband present, 6.6% had a male householder with no wife present, and 38.3% were non-families. 27.9% of all households were made up of individuals, and 8.3% had someone living alone who was 65 years of age or older.