Income Inequality in St. Louis County, MO was 16.64124 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in St. Louis County, MO reached a record high of 16.64124 in January of 2022 and a record low of 14.61495 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in St. Louis County, MO - last updated from the United States Federal Reserve on May of 2024.