 Lyons Township was organized in 1873, and named after Lyon, in France.According to the United States Census Bureau, the township has a total area of 35.5 square miles (91.9 km²), of which 35.2 square miles (91.1 km²) is land and 0.3 square miles (0.8 km²) is water.At the 2000 census, there were 208 people, 73 households and 58 families residing in the township.