Welcome to the Town of Sullivan!
Sullivan is a town in Jefferson County, Wisconsin, United States. The population was 2,213 as of January, 2018. The, census-designated place of Rome, and the unincorporated communities of Heath Mills, Oak Hill, and Slabtown are located in the town.
The Town of Sullivan was named for John Sullivan, an officer in the American Revolutionary War.
According to the United States Census Bureau, the town has a total area of 35.5 square miles (92.0 km²), of which 34.7 square miles (89.8 km²) is land and 0.9 square miles (2.2 km²), or 2.39%, is water.