High School Graduate or Higher (5-year estimate) in Ontonagon County, MI was 93.60% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Ontonagon County, MI reached a record high of 93.60 in January of 2022 and a record low of 88.60 in January of 2013. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in Ontonagon County, MI - last updated from the United States Federal Reserve on May of 2024.