Cumberland County, Maine Demographics 2026
Cumberland County, Maine has a population of 308,827, the 1st most populous county in Maine. The median household income is $95,677 and the median home value is $451,200. The poverty rate is 7.3%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Cumberland County Quick Facts
How Cumberland County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 305,940 | 308,827 | +0.9% |
| Median household income | $92,983 | $95,677 | +2.9% |
| Median home value | $411,400 | $451,200 | +9.7% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 19 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Cumberland County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Portland | 68,854 | $79,540 | 11.2% | $489,600 |
| South Portland | 26,930 | $86,838 | 6.9% | $441,200 |
| Westbrook | 20,775 | $85,038 | 8.0% | $383,300 |
| Brunswick | 17,652 | $70,722 | 8.6% | $363,200 |
| Gorham | 7,593 | $128,190 | 4.7% | $506,000 |
| Yarmouth | 6,289 | $93,575 | 12.9% | $576,900 |
| Oak Hill | 5,631 | $97,610 | 5.0% | $429,100 |
| North Windham | 5,417 | $88,522 | 6.1% | $342,800 |
| Cumberland Center | 2,790 | $170,125 | 8.6% | $539,500 |
| Dunstan | 2,363 | $91,067 | 13.4% | $539,000 |
| Falmouth Foreside | 2,051 | $177,411 | 1.3% | $855,000 |
| Steep Falls | 1,861 | $80,280 | 7.2% | $243,400 |
| Bridgton | 1,756 | $55,428 | 22.1% | $263,800 |
| Falmouth | 1,585 | $101,484 | 2.4% | $833,300 |
| Freeport | 1,441 | $59,455 | 21.5% | $421,000 |
| South Windham | 1,212 | $133,223 | 9.4% | $314,300 |
| Gray | 938 | $123,833 | 7.1% | $438,400 |
| Little Falls | 718 | $127,500 | 0.3% | $375,800 |
| Cousins Island | 658 | $180,625 | 2.7% | $658,000 |
| Casco | 618 | N/A | 26.2% | $248,500 |
| Naples | 527 | $61,510 | 3.1% | $533,500 |
| Standish | 360 | N/A | 4.7% | $399,100 |
| Littlejohn Island | 73 | N/A | 0.0% | $671,900 |
Explore Maine Rankings
Population Overview
Cumberland County is located in Maine with a total population of 308,827. It is the 1st most populous county out of 16 in Maine. The county encompasses 23 Census-designated places.
Age Demographics
The median age in Cumberland County is 42.2 years. This is 6% lower than the state median of 44.8 years.
Economy, Income & Housing
The median household income in Cumberland County is $95,677. This is 28% higher than the state median of $74,733. It is also 19% higher than the national median of $80,734. The poverty rate stands at 7.3%. This is 32% lower than the state poverty rate of 10.8%. The unemployment rate is 3.1%. This is 17% lower than the state rate of 3.8%. The median home value is $451,200. Housing costs are 52% higher than the state median of $296,600. The home-value-to-income ratio is 4.7x. 69.8% of occupied housing units are owner-occupied. This homeownership rate is 6% lower than the state average of 74.3%.
Race & Ethnicity
Cumberland County has a predominantly White (non-Hispanic) population, comprising 85.6% of all residents. Black or African American residents account for 3.4%. The Black or African American population is significantly higher than the state average (3.4% vs 1.8%). The Asian population is significantly higher than the state average (2.2% vs 1.1%).
Education
53.0% of residents aged 25 and older hold a bachelor's degree or higher. This places Cumberland County in the top 10% of all counties in the state for educational attainment. This is 46% higher than the state rate of 36.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.8%. Notably, 21.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All figures for Cumberland County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Maine and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Cumberland County, Maine?
Cumberland County has a population of 308,827, making it the 1st most populous county in Maine.
What is the median income in Cumberland County?
The median household income in Cumberland County is $95,677 with a poverty rate of 7.3%.
How many cities are in Cumberland County, Maine?
Cumberland County contains 23 Census-designated places.