Cumberland County, Maine Demographics 2026

Population Overview

Cumberland County is located in Maine with a total population of 305,940. It is the 1st most populous county out of 16 in Maine. The county encompasses 3 Census-designated places.

Age Demographics

The median age in Cumberland County is 42.1 years. This is 6% lower than the state median of 44.8 years.

Economy, Income & Housing

The median household income in Cumberland County is $92,983. This is 30% higher than the state median of $71,773. Compared to the national median of $78,538, household income here is 18% higher. The poverty rate stands at 7.1%. This is 35% lower than the state poverty rate of 10.8%. The unemployment rate is 3.2%. This is 19% lower than the state rate of 3.9%. The median home value is $411,400. Housing costs are 54% higher than the state median of $266,400. The home-value-to-income ratio is 4.4x. 70.4% of occupied housing units are owner-occupied. This homeownership rate is 5% lower than the state average of 74.0%.

Race & Ethnicity

Cumberland County has a predominantly White (non-Hispanic) population, comprising 86.7% of all residents. Black or African American residents account for 3.2%. The Black or African American population is significantly higher than the state average (3.2% vs 1.6%). The Asian population is significantly higher than the state average (2.1% vs 1.1%).

Education

52.2% of residents aged 25 and older hold a bachelor's degree or higher. This places Cumberland County in the top 10% of all cities in the state for educational attainment. This is 48% higher than the state rate of 35.3%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.5%. Notably, 21.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.