[1] The northernmost shores of Lake Missaukee extend into Caldwell Township.

As of the census[3] of 2000, there were 1,363 people, 523 households, and 369 families residing in the township.

There were 838 housing units at an average density of 24.3 per square mile (9.4/km2).

There were 523 households, out of which 33.8% had children under the age of 18 living with them, 54.1% were married couples living together, 11.7% had a female householder with no husband present, and 29.4% were non-families.

23.9% of all households were made up of individuals, and 11.1% had someone living alone who was 65 years of age or older.