Income Inequality in Jefferson County, IL was 12.84869 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Jefferson County, IL reached a record high of 14.26279 in January of 2011 and a record low of 12.49884 in January of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Jefferson County, IL - last updated from the United States Federal Reserve on May of 2024.