High School Graduate or Higher (5-year estimate) in Ionia County, MI was 91.30% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Ionia County, MI reached a record high of 91.50 in January of 2021 and a record low of 86.60 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in Ionia County, MI - last updated from the United States Federal Reserve on May of 2024.