People 25 Years and Over Who Have Completed an Associate's Degree or Higher (5-year estimate) in Mason County, IL was 30.10% in January of 2023, according to the United States Federal Reserve. Historically, People 25 Years and Over Who Have Completed an Associate's Degree or Higher (5-year estimate) in Mason County, IL reached a record high of 30.10 in January of 2023 and a record low of 21.70 in January of 2014. Trading Economics provides the current actual value, an historical data chart and related indicators for People 25 Years and Over Who Have Completed an Associate's Degree or Higher (5-year estimate) in Mason County, IL - last updated from the United States Federal Reserve on September of 2025.