Income Inequality in Martin County, IN was 11.99365 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Martin County, IN reached a record high of 12.05816 in January of 2016 and a record low of 9.17064 in January of 2012. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Martin County, IN - last updated from the United States Federal Reserve on May of 2024.