Income Inequality in Montgomery County, MD was 15.38018 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Montgomery County, MD reached a record high of 15.38018 in January of 2022 and a record low of 12.80430 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Montgomery County, MD - last updated from the United States Federal Reserve on May of 2024.