Income Inequality in Piatt County, IL was 11.47357 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Piatt County, IL reached a record high of 11.47357 in January of 2022 and a record low of 8.54664 in January of 2018. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Piatt County, IL - last updated from the United States Federal Reserve on May of 2024.