Alton is a town in Penobscot County, Maine, United States.

[1] Alton is located on State Highway 16, approximately 18 miles north of Bangor and adjacent to Old Town.

Although Alton is an independent municipality, it does not have its own ZIP code or post office.

There were 385 housing units at an average density of 9.1 per square mile (3.5/km2).

21.0% of all households were made up of individuals, and 7.5% had someone living alone who was 65 years of age or older.

There were 347 housing units at an average density of 8.2 per square mile (3.2/km2).

16.2% of all households were made up of individuals, and 4.9% had someone living alone who was 65 years of age or older.