Roseville Township was organized in 1878, and named for the wild roses which grew there when the first settlers came.

As of the census[1] of 2000, there were 154 people, 52 households, and 43 families residing in the township.

The racial makeup of the township was 96.75% White, 1.30% Asian and 1.95% from two or more races.

15.4% of all households were made up of individuals, and 5.8% had someone living alone who was 65 years of age or older.

About 8.7% of families and 9.7% of the population were below the poverty line, including 11.1% of those under the age of eighteen and none of those 65 or over.