Jefferson County, Wisconsin Basics:
Jefferson County Wisconsin - Government Site
Population: 84,351
Area: 556 square miles
County seat: Jefferson
Area code(s) in use: 920 414 262
Time zone: CST
High school graduate or higher: 90.5%
Bachelor's degree or higher: 22.9%
Median household income: $54,705
Persons in poverty: 10.0%
Home ownership rate: 71.4%
Mean travel time to work: 22.9 minutes