Unemployment Rate in Harmon County, OK was 2.40% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in Harmon County, OK reached a record high of 7.10 in February of 1991 and a record low of 1.60 in September of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Harmon County, OK - last updated from the United States Federal Reserve on April of 2026.