Income Inequality in Spink County, SD was 12.21360 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Spink County, SD reached a record high of 16.59332 in January of 2013 and a record low of 11.13488 in January of 2017. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Spink County, SD - last updated from the United States Federal Reserve on May of 2024.