Du Page County, IL - Income Inequality in DuPage County, IL was 13.60180 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Du Page County, IL - Income Inequality in DuPage County, IL reached a record high of 13.60180 in January of 2022 and a record low of 11.79312 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Du Page County, IL - Income Inequality in DuPage County, IL - last updated from the United States Federal Reserve on May of 2024.