Burnham is a town in Waldo County, Maine, United States.

The town is drained by Twentyfive Mile Stream and the Sebasticook River.

There were 714 housing units at an average density of 18.4 per square mile (7.1/km2).

27.1% of all households were made up of individuals, and 9% had someone living alone who was 65 years of age or older.

There were 649 housing units at an average density of 16.7 per square mile (6.4/km2).

20.6% of all households were made up of individuals, and 7.0% had someone living alone who was 65 years of age or older.