 The unincorporated community of Otsego is located in the town.The villages of Rio and Doylestown lie in the geographic area of the town of Otsego.According to the United States Census Bureau, the town has a total area of 31.0 square miles (80.2 km²), of which, 30.5 square miles (79.0 km²) of it is land and 0.5 square miles (1.2 km²) of it (1.49%) is water.