High School Graduate or Higher (5-year estimate) in Harmon County, OK was 80.00% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Harmon County, OK reached a record high of 81.90 in January of 2020 and a record low of 71.60 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in Harmon County, OK - last updated from the United States Federal Reserve on May of 2024.