 According to the United States Census Bureau, the township has a total area of 17.9 square miles (46.3 km²), of which, 17.2 square miles (44.4 km²) of it is land and 0.7 square miles (1.8 km²) of it (3.91%) is water.As of the census of 2010, there were 892 people, 335 households, and 252 families residing in the township.The population density was 51.9 people per square mile (20/km²).