The Town of Thornapple is located in Rusk County, Wisconsin, United States. The population was 721 at the 2020 census. The unincorporated community of Thornapple is located in the town.
Geography
According to the United States Census Bureau, the town has a total area of 52.6 square miles (136.2 km<sup>2</sup>), of which 51.4 square miles (133.0 km<sup>2</sup>) is land and 1.2 square miles (3.2 km<sup>2</sup>) (2.36%) is water.
Demographics
As of the census