Income Inequality in Columbia County, WA was 16.96623 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Columbia County, WA reached a record high of 19.54063 in January of 2019 and a record low of 10.67817 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Columbia County, WA - last updated from the United States Federal Reserve on May of 2024.