Income Inequality in Richland County, MT was 15.59774 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Richland County, MT reached a record high of 15.59774 in January of 2022 and a record low of 9.31685 in January of 2018. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Richland County, MT - last updated from the United States Federal Reserve on May of 2024.