Income Inequality in Gregory County, SD was 14.06162 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Gregory County, SD reached a record high of 14.06162 in January of 2022 and a record low of 11.81161 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Gregory County, SD - last updated from the United States Federal Reserve on May of 2024.