 The unincorporated community of Lewiston is located in the town.According to the United States Census Bureau, the town has a total area of 54.9 square miles (142.2 km²), of which, 54.0 square miles (139.8 km²) of it is land and 1.0 square miles (2.5 km²) of it (1.75%) is water.At the 2000 census there were 1,187 people in 473 households, including 347 families, in the town.