Income Inequality in Day County, SD was 12.00051 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Day County, SD reached a record high of 18.83168 in January of 2015 and a record low of 10.73534 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Day County, SD - last updated from the United States Federal Reserve on May of 2024.