 According to the United States Census Bureau, the township has a total area of 27.5 square miles (71.1 km²), of which, 25.8 square miles (66.7 km²) of it is land and 1.7 square miles (4.5 km²) of it (6.26%) is water.As of the census of 2000, there were 799 people, 320 households, and 240 families residing in the township.The population density was 31.0 people per square mile (12.0/km²).