Income Inequality in Grant County, WA was 11.82225 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Grant County, WA reached a record high of 11.82225 in January of 2022 and a record low of 10.42911 in January of 2016. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Grant County, WA - last updated from the United States Federal Reserve on May of 2024.