 The entire township is drained by various tributaries of the St. Joseph, the largest being the Coldwater River, which flows into the St. Joseph at Union City.According to the United States Census Bureau, the township has a total area of , of which is land and , or 1.55%, is water.As of the census of 2000, there were 3,121 people, 1,184 households, and 837 families residing in the township.