Unemployment Rate in Mason County, IL was 5.20% in March of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Mason County, IL reached a record high of 14.80 in January of 2010 and a record low of 3.80 in September of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Mason County, IL - last updated from the United States Federal Reserve on May of 2024.