 According to the United States Census Bureau, the township has a total area of 20.7 square miles (53.5 km²), of which, 20.6 square miles (53.3 km²) of it is land and 0.1 square miles (0.2 km²) of it (0.39%) is water.At the 2000 census there were 3,796 people, 1,360 households, and 1,083 families living in the township.The population density was 184.5 people per square mile (71.2/km²).