Income Inequality in Stanley County, SD was 10.70138 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Stanley County, SD reached a record high of 14.27639 in January of 2012 and a record low of 8.83846 in January of 2018. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Stanley County, SD - last updated from the United States Federal Reserve on May of 2024.