 The unincorporated community of Hemlock is located in the town.According to the United States Census Bureau, the town has a total area of 35.0 square miles (90.6 km²), of which, 34.9 square miles (90.3 km²) of it is land and 0.1 square miles (0.3 km²) of it (0.37%) is water.At the 2000 census there were 627 people in 195 households, including 164 families, in the town.