[2] The town was founded by and named after Jonathan Eddy, a militia captain in the French and Indian War, a colonel in the American Revolutionary War, and the first magistrate in the area.

Eddy tried to make Nova Scotia—the 14th American colony—join the revolution by leading the Siege of Fort Cumberland.

After the siege failed, Eddy and others emigrated to the District of Maine and were given land grants in present-day Eddington.

[citation needed] Later in the war, Eddy successfully defended Maine from a British attack in the Battle of Machias (1777).

23.5% of all households were made up of individuals, and 8% had someone living alone who was 65 years of age or older.

21.1% of all households were made up of individuals, and 6.7% had someone living alone who was 65 years of age or older.

Out of the total population, 5.5% of those under the age of 18 and 4.6% of those 65 and older were living below the poverty line.