Unemployment Rate in Preble County, OH was 3.70% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in Preble County, OH reached a record high of 13.60 in March of 2009 and a record low of 2.80 in April of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Preble County, OH - last updated from the United States Federal Reserve on April of 2026.