Income Inequality in Fergus County, MT was 12.54856 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Fergus County, MT reached a record high of 14.84222 in January of 2019 and a record low of 10.06720 in January of 2014. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Fergus County, MT - last updated from the United States Federal Reserve on May of 2024.