Cumberland County, Maine
Located in Maine, Cumberland County has a population of 308,827 residents and a median age of 42.2 years, making it the #234 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 7.3%. The median home value is $451,200, and the median household income is $95,677, which is 27% above the national median.
Demographics
Cumberland County has a population of 308,827, making it the #234 most populous county in the US. The median age is 42.2 years, which is 8.5% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Cumberland County is $95,677, ranking #212 out of 3,222 counties — 27.3% above the national median. The poverty rate is 7.3% and unemployment stands at 3.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Cumberland County is $451,200 (+60.1% vs national). Renters pay a median of $1,589/mo and the homeownership rate is 69.8%.
Median Home Value Trend
Rankings →Household Type
Education
In Cumberland County, 53.0% of adults age 25+ hold a bachelor's degree or higher, which is 57.3% above the national average, ranking #69 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Cumberland County is 79.5 years. 12.4% of adults report poor or fair health and 6.7% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
12.5% of adults in Cumberland County smoke , 29.4% are obese , and 21.6% report excessive drinking. The drug overdose death rate is 34.5 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Cumberland County is 1.1 per 100,000 and the suicide rate is 13.3 per 100,000. Motor vehicle deaths occur at a rate of 7.9 per 100,000.
Homicide Rate Trend
Families & Children
7.3% of children in Cumberland County live in poverty and the infant mortality rate is 5.2 per 1,000 live births. The teen birth rate is 4.2 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Cumberland County is 84.1%. The mean commute time is 25.4 min, which is 8.0% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Cumberland County voted Democratic with a margin of 36.3%. The vote was 66.9% Dem / 30.6% Rep. Compared to 2020, the margin shifted +0.6 toward Democrats .
Vote Share Over Time
About Cumberland County, Maine
Cumberland County, Maine has a total population of 308,827, making it the 234th most populous county in the United States. The median age in Cumberland County is 42.2 years, which is 8.5% above the national median of 38.9 years.
The median household income in Cumberland County is $95,677, which ranks #212 of 3,222 counties nationwide. This is 27.3% above the national median of $75,149. The poverty rate is 7.3%, lower than the national rate of 12.6%. The unemployment rate stands at 3.1%.
The median home value in Cumberland County is $451,200, 60.1% above the national median. Renters in Cumberland County pay a median gross rent of $1,589 per month. The homeownership rate is 69.8%, compared to the national rate of 64.4%.
In Cumberland County, 53.0% of residents aged 25 and older hold a bachelor's degree or higher, 57.3% above the national average of 33.7%. Health insurance coverage stands at 95.3% of the population. The average commute time for workers is 25.4 min.
Cumberland County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 85.6% of the population, followed by Two or More Races (5.5%) and Black (non-Hispanic) (3.4%).
All data for Cumberland County, Maine comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.