Income Inequality in Washington County, OK was 14.42864 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Washington County, OK reached a record high of 15.04241 in January of 2018 and a record low of 12.54524 in January of 2013. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Washington County, OK - last updated from the United States Federal Reserve on May of 2024.