Peacock was the name of a station on the Chicago and West Michigan Railroad (later known as the Pere Marquette Railway), 15 miles north of Baldwin.

[4] As of the census[1] of 2000, there were 445 people, 220 households, and 144 families residing in the township.

There were 1,068 housing units at an average density of 30.7 per square mile (11.9/km2).

There were 220 households, out of which 10.0% had children under the age of 18 living with them, 58.6% were married couples living together, 4.5% had a female householder with no husband present, and 34.5% were non-families.

27.7% of all households were made up of individuals, and 10.0% had someone living alone who was 65 years of age or older.