[2] According to the United States Census Bureau, the township has a total area of 15.1 square miles (39 km2), all land.

The census-designated place of Kratzerville is in the southeastern corner of the township.

There were 524 housing units at an average density of 34.8 per square mile (13.4/km2).

14.4% of all households were made up of individuals, and 5.4% had someone living alone who was 65 years of age or older.

The polling place for Jackson Township is located in the volunteer fire department in Kratzerville.