Income Inequality in Washington County, IA was 8.95324 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Washington County, IA reached a record high of 9.59604 in January of 2012 and a record low of 7.87415 in January of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Washington County, IA - last updated from the United States Federal Reserve on May of 2024.