High School Graduate or Higher (5-year estimate) in Clay County, IL was 88.10% in January of 2022, according to the United States Federal Reserve. Historically, High School Graduate or Higher (5-year estimate) in Clay County, IL reached a record high of 89.90 in January of 2018 and a record low of 86.00 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 Clay County, IL - last updated from the United States Federal Reserve on May of 2024.