Jefferson County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 84,900. Its county seat is Jefferson. Jefferson County comprises the Watertown-Fort Atkinson, WI
Jefferson County Courthouse
Grandstands at the county fairgrounds in Jefferson
Palmyra is a town in Jefferson County, Wisconsin, United States. The population was 1,220 at the 2020 census. The village of Palmyra is located within the town.