Income Inequality in Massac County, IL was 10.31702 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Massac County, IL reached a record high of 12.98755 in January of 2016 and a record low of 9.94571 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Massac County, IL - last updated from the United States Federal Reserve on May of 2024.