Unemployment Rate in Jefferson County, OH was 3.50% in May 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 3.50 in May of 2026. 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 July of 2026.