It was named for the green valley of the Shell River.

As of the census[1] of 2000, there were 346 people, 124 households, and 90 families residing in the township.

There were 165 housing units at an average density of 4.7 per square mile (1.8/km2).

There were 124 households, out of which 33.9% had children under the age of 18 living with them, 62.1% were married couples living together, 4.8% had a female householder with no husband present, and 27.4% were non-families.

25.0% of all households were made up of individuals, and 9.7% had someone living alone who was 65 years of age or older.