Income Inequality in Gallatin County, MT was 14.26440 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Gallatin County, MT reached a record high of 14.77434 in January of 2017 and a record low of 11.50567 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Gallatin County, MT - last updated from the United States Federal Reserve on May of 2024.