Unemployment Rate in Jefferson County, ID was 3.50% in February of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Jefferson County, ID reached a record high of 9.50 in August of 1990 and a record low of 1.50 in May of 2007. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Jefferson County, ID - last updated from the United States Federal Reserve on May of 2024.