 According to the United States Census Bureau, the township has a total area of 27.4 square miles (70.8 km²), of which, 25.2 square miles (65.2 km²) of it is land and 2.2 square miles (5.7 km²) of it (8.01%) is water.As of the census of 2000, there were 3,722 people, 1,443 households, and 1,057 families residing in the township.The population density was 148.0 people per square mile (57.1/km²).