Income Inequality in Sumner County, KS was 11.08199 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Sumner County, KS reached a record high of 12.54652 in January of 2017 and a record low of 9.53459 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Sumner County, KS - last updated from the United States Federal Reserve on May of 2024.