Income Inequality in Union County, IL was 13.58773 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Union County, IL reached a record high of 14.40666 in January of 2021 and a record low of 12.11276 in January of 2012. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Union County, IL - last updated from the United States Federal Reserve on May of 2024.