Unemployment Rate in Jefferson County, OH was 4.60% in March of 2026, according to the United States Federal Reserve. Historically, Unemployment Rate in Jefferson County, OH reached a record high of 20.50 in October of 1996 and a record low of 4.00 in April of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Jefferson County, OH - last updated from the United States Federal Reserve on June of 2026.