Income Inequality in Boone County, IL was 11.60288 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Boone County, IL reached a record high of 12.22050 in January of 2019 and a record low of 10.93053 in January of 2015. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Boone County, IL - last updated from the United States Federal Reserve on May of 2024.