Jefferson County Map
The County of Jefferson is located in the State of Wisconsin. According to the 2020 US Census the Jefferson County population is estimated at 85,038 people. The Jefferson County time zone is Central Daylight Time which is 6 hours behind Coordinated Universal Time (UTC).
Nearby counties include Dane County, Dodge County, Rock County, Walworth County, Waukesha County.
Top cities include Jefferson, Farmington, Fort Atkinson, Koshkonong, Waterloo