Income Inequality in Cass County, IL was 11.27337 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Cass County, IL reached a record high of 11.27337 in January of 2022 and a record low of 8.64530 in January of 2013. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Cass County, IL - last updated from the United States Federal Reserve on May of 2024.