Unemployment Rate in Clinton County, OH was 2.70% in May of 2026, according to the United States Federal Reserve. Historically, Unemployment Rate in Clinton County, OH reached a record high of 19.70 in January of 2010 and a record low of 2.70 in May of 2026. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Clinton County, OH - last updated from the United States Federal Reserve on July of 2026.