Du Page County, IL - High School Graduate or Higher (5-year estimate) in DuPage County, IL was 93.50% in January of 2022, according to the United States Federal Reserve. Historically, Du Page County, IL - High School Graduate or Higher (5-year estimate) in DuPage County, IL reached a record high of 93.50 in January of 2021 and a record low of 91.90 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for Du Page County, IL - High School Graduate or Higher (5-year estimate) in DuPage County, IL - last updated from the United States Federal Reserve on May of 2024.