De Kalb County, IL - Income Inequality in DeKalb County, IL was 15.94909 Ratio in January of 2022, according to the United States Federal Reserve. Historically, De Kalb County, IL - Income Inequality in DeKalb County, IL reached a record high of 15.94909 in January of 2022 and a record low of 12.27383 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for De Kalb County, IL - Income Inequality in DeKalb County, IL - last updated from the United States Federal Reserve on May of 2024.