Income Inequality in Cumberland County, ME was 14.67936 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Cumberland County, ME reached a record high of 15.57778 in January of 2015 and a record low of 13.41210 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Cumberland County, ME - last updated from the United States Federal Reserve on May of 2024.