Income Inequality in Brookings County, SD was 10.68055 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Brookings County, SD reached a record high of 13.75976 in January of 2011 and a record low of 9.78419 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Brookings County, SD - last updated from the United States Federal Reserve on May of 2024.