Unemployment Rate in Warren County, KY was 4.00% in March of 2026, according to the United States Federal Reserve. Historically, Unemployment Rate in Warren County, KY reached a record high of 16.80 in April of 2020 and a record low of 2.50 in November of 1999. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Warren County, KY - last updated from the United States Federal Reserve on June of 2026.