Income Inequality in Sanborn County, SD was 14.44821 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Sanborn County, SD reached a record high of 14.44821 in January of 2022 and a record low of 9.04575 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Sanborn County, SD - last updated from the United States Federal Reserve on May of 2024.