[3] The first lumbermill in Otsego County was built within Corwith Township at a place called Berryville in 1877.

As of the census[1] of 2000, there were 1,719 people, 665 households, and 466 families residing in the township.

There were 1,000 housing units at an average density of 9.3 per square mile (3.6/km2).

The racial makeup of the township was 97.21% White, 0.23% African American, 1.05% Native American, 0.17% Asian, 0.06% Pacific Islander, 0.41% from other races, and 0.87% from two or more races.

24.2% of all households were made up of individuals, and 9.6% had someone living alone who was 65 years of age or older.