High School Graduate or Higher (5-year estimate) in St. Clair County, MO was 89.40% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in St. Clair County, MO reached a record high of 89.40 in January of 2022 and a record low of 81.10 in January of 2016. Trading Economics provides the current actual value, an historical data chart and related indicators for High School Graduate or Higher (5-year estimate) in St. Clair County, MO - last updated from the United States Federal Reserve on May of 2024.