Deerfield is a town in Waushara County, Wisconsin, United States. The population was 667 at the 2020 census.
Geography
According to the United States Census Bureau, the town has a total area of 35.0 square miles (90.7 km<sup>2</sup>), of which 34.7 square miles (89.8 km<sup>2</sup>) is land and 0.3 square mile (0.9 km<sup>2</sup>) (0.97%) is water.
Demographics
As of the census