Income Inequality in Lake County, IL was 16.22259 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Lake County, IL reached a record high of 16.45681 in January of 2018 and a record low of 13.81934 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Lake County, IL - last updated from the United States Federal Reserve on May of 2024.