Unemployment Rate in Leavenworth County, KS was 4.30% in March of 2026, according to the United States Federal Reserve. Historically, Unemployment Rate in Leavenworth County, KS reached a record high of 12.00 in April of 2020 and a record low of 2.30 in November of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Leavenworth County, KS - last updated from the United States Federal Reserve on June of 2026.