 According to the United States Census Bureau, the township has a total area of 27.9 square miles (72.2 km2).27.9 square miles (72.2 km2) of it is land and 0.04 square miles (0.1 km2) of it (0.07%) is water.As of the census of 2000, there were 1,145 people, 438 households, and 335 families residing in the township.The population density was 41.1 people per square mile (15.9/km2).