Unemployment Rate in Jefferson County, WI was 2.90% in April of 2026, according to the United States Federal Reserve. Historically, Unemployment Rate in Jefferson County, WI reached a record high of 11.90 in April of 2020 and a record low of 1.80 in September of 1999. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Jefferson County, WI - last updated from the United States Federal Reserve on June of 2026.