[4] Supreme Court Justice William O. Douglas was born in Maine Township in 1898.

As of the census[1] of 2000, there were 686 people, 285 households, and 210 families residing in the township.

There were 556 housing units at an average density of 18.5 per square mile (7.1/km2).

There were 285 households, out of which 26.0% had children under the age of 18 living with them, 66.7% were married couples living together, 3.9% had a female householder with no husband present, and 26.3% were non-families.

22.1% of all households were made up of individuals, and 10.9% had someone living alone who was 65 years of age or older.