The township was named for railroad builder Archibald Guthrie.
As of the census[2] of 2000, there were 436 people, 160 households, and 126 families residing in the township.
There were 170 housing units at an average density of 4.9 per square mile (1.9/km2).
There were 160 households, out of which 36.3% had children under the age of 18 living with them, 67.5% were married couples living together, 7.5% had a female householder with no husband present, and 21.3% were non-families.
17.5% of all households were made up of individuals, and 8.1% had someone living alone who was 65 years of age or older.