 The Bells Mills Covered Bridge was listed on the National Register of Historic Places in 1980.According to the United States Census Bureau, the township has a total area of 45.7 square miles (118.4 km²), of which, 45.3 square miles (117.3 km²) of it is land and 0.4 square miles (1.2 km²) of it (0.98%) is water.At the 2000 census there were 6,175 people, 2,461 households, and 1,840 families living in the township.