Jefferson County is named for Jefferson County, New York. This is where original settlers originated from.
The seat is Jefferson, while the largest city is Watertown.
It borders Dodge, Waukesha, Walworth, Rock and Dane Counties.
Main Highways include I-94, US-12, US-16, WI-16, WI-26, WI-19 and WI-59.
Cities
Ft. Atkinson
Jefferson
Johnson Creek
Lake Mills
Watertown