Income Inequality in Lake County, MT was 19.69559 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Lake County, MT reached a record high of 19.69559 in January of 2022 and a record low of 11.37016 in January of 2011. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Lake County, MT - last updated from the United States Federal Reserve on May of 2024.