Income Inequality in Washington County, MO was 16.18331 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Washington County, MO reached a record high of 16.56984 in January of 2021 and a record low of 11.07296 in January of 2017. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Washington County, MO - last updated from the United States Federal Reserve on May of 2024.