 Wanger Township was organized in 1882, and named for a pioneer settler.According to the United States Census Bureau, the township has a total area of 36.0 square miles (93.4 km²), of which 36.0 square miles (93.3 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.11%) is water.As of the census of 2000, there were 95 people, 42 households, and 25 families residing in the township.