[8] As of the census[1] of 2000, there were 832 people, 358 households, and 239 families residing in the township.

The racial makeup of the township was 98.44% White, 0.60% Native American, and 0.96% from two or more races.

27.7% of all households were made up of individuals, and 13.7% had someone living alone who was 65 years of age or older.

Gustin Township is served by two public school districts.

The majority of the township is served by Alcona Community Schools, while a very small southern portion of the township is served by Oscoda Area Schools to the south in Iosco County.