Income Inequality in Peoria County, IL was 18.96865 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Peoria County, IL reached a record high of 18.96865 in January of 2022 and a record low of 14.81810 in January of 2014. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Peoria County, IL - last updated from the United States Federal Reserve on May of 2024.