Income Inequality in Marquette County, MI was 11.54168 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Marquette County, MI reached a record high of 15.33003 in January of 2015 and a record low of 11.54168 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Marquette County, MI - last updated from the United States Federal Reserve on May of 2024.