Overview
Cumberland County is home to 305,940 residents (Census ACS 5-Year, 2023), making it the most populous county in Maine. It holds roughly 23% of the state's population and includes Portland, the state's largest city.
The county's median household income sits at $92,983 (Census ACS 5-Year, 2023), higher than 93% of U.S. counties. Per capita income reaches $54,238 (Census ACS 5-Year, 2023), above 97% of counties nationally. That combination of population size and high income makes Cumberland the economic center of a state otherwise defined by small, rural counties.
Commute times are short. The average is 18.9 minutes (Census ACS 5-Year, 2023), well below the national average and shorter than roughly three-quarters of U.S. counties. That figure reflects a compact metro area where most jobs sit within a reasonable drive of most housing.
Demographics
The median age is 42.1 (Census ACS 5-Year, 2023), near the national midpoint. Within Maine, that's notably young. The county ranks in the bottom 6% of the state for median age, meaning almost every other Maine county skews older.
Education attainment is the standout metric. More than half of adults, 52.2%, hold a bachelor's degree or higher (Census ACS 5-Year, 2023). That's higher than 98% of all U.S. counties and tops in Maine. The national average hovers around 33%. Cumberland isn't just above average; it's in a different category.
The county's racial composition is 86.7% white, 3.2% Black, 2.1% Asian, 0.1% Native American, and 2.7% Hispanic or Latino (Census ACS 5-Year, 2023). It's the least white county in Maine, which says more about Maine's overall homogeneity than about Cumberland's diversity. The Black population share is higher than 88% of Maine counties, and the Asian population share exceeds 94% of counties statewide.
Education
Per-pupil spending reaches $20,519 (Education Data Portal, 2020), roughly 37% above the national average of about $15,000. Total enrollment stands at 36,887 students (Education Data Portal, 2021).
The student-teacher ratio is 11.3 to 1 (Education Data Portal, 2021), well below the national average of 15.5 to 1. Smaller class sizes correlate with the county's high education spending, though they don't tell the full story of classroom quality.
The graduation rate is 87% (Education Data Portal, 2019), right at the national average. For a county that spends this much per student and has this level of adult education attainment, a middling graduation rate raises questions. The spending is clearly there. The outcomes, at least by this single measure, are ordinary.
Economy & Employment
The unemployment rate is 2.5% (BLS LAUS, 2025). That's lower than 93% of U.S. counties and the lowest in Maine. The labor force totals 175,184, with 170,794 employed and 4,390 unemployed (BLS LAUS, 2025). The job market is tight by any standard.
The poverty rate is 6.8% (Census ACS 5-Year, 2023), lower than 94% of U.S. counties. Within Maine, Cumberland has the lowest poverty rate. Median household income of $92,983 (Census ACS 5-Year, 2023) ranks at the top of the state and outpaces 93% of counties nationally.
Average adjusted gross income is $103,385 per return (IRS Statistics of Income, 2021), with total AGI across 166,680 returns reaching $17.2 billion (IRS Statistics of Income, 2021). Average total income per return is $104,745 (IRS Statistics of Income, 2021). The gap between median household income and average AGI suggests a distribution with a long upper tail. High earners pull the average well above the median.
Low unemployment, low poverty, high income. The labor market data is consistent across every source. Cumberland County's economy produces better outcomes than the vast majority of U.S. counties.
Housing & Cost of Living
The median home value is $411,400 (Census ACS 5-Year, 2023), higher than 94% of U.S. counties and the highest in Maine. Median gross rent is $1,492 per month (Census ACS 5-Year, 2023), also above 94% of counties nationally.
The county has 151,519 total housing units with 21,516 vacant, putting the vacancy rate at 14.2% (Census ACS 5-Year, 2023). That's near the national midpoint. In a coastal Maine county, a portion of those vacancies likely reflects seasonal and vacation properties rather than soft demand.
The income-to-home-value ratio tells the affordability story. At a median home value of $411,400 and median income of $92,983, homes cost roughly 4.4 times annual household income. The rent-to-income ratio works out to about 19% of median monthly income, which falls within the generally accepted affordable range. Housing costs are high in absolute terms but proportional to what residents earn.
Still, those medians mask the experience of lower-income households. With a poverty rate of 6.8% and rents at $1,492, the gap between what the county's lowest earners make and what housing costs is significant.
Health & Wellness
Obesity affects 26.7% of adults (CDC PLACES, 2023), one of the lowest rates in the country and the lowest in Maine. The diabetes rate is 7.4% (CDC PLACES, 2023), also lower than 99% of U.S. counties. High blood pressure affects 27.8% of adults (CDC PLACES, 2023), lower than 94% of counties nationally.
Physical health outcomes are strong. Only 11.2% of adults report frequent poor physical health days (CDC PLACES, 2023), better than 93% of U.S. counties.
Mental health tells a different story. Depression affects 26.7% of adults (CDC PLACES, 2023), higher than 77% of counties nationally. And 17.9% report frequent poor mental health days (CDC PLACES, 2023). Maine's long winters and limited daylight hours are a plausible factor, though the data alone doesn't confirm causation.
Preventive care usage is solid. Cholesterol screening reaches 86% (CDC PLACES, 2023), higher than 90% of counties. Annual checkup rates hit 77.9% (CDC PLACES, 2023). The uninsured rate is just 6.7% (CDC PLACES, 2023), lower than 96% of U.S. counties.
The physical health picture is excellent by national standards. The mental health picture, particularly depression prevalence, doesn't match.
Climate & Natural Disasters
Cumberland County has 39 federal disaster declarations on record (FEMA OpenFEMA, 2026), more than 95% of U.S. counties. The record explains itself. Severe storms account for roughly a dozen of those declarations, followed by snowstorms and flooding.
The climate is cold. Average temperature is 46.9°F (NOAA Climate Data Online, 2025), with average highs of 55.7°F and lows of 38°F. Both sit in the bottom quarter nationally. Annual snowfall is 70 inches (NOAA Climate Data Online, 2025), more than 94% of U.S. counties, and it shows up reliably enough that the county earned a FEMA winter storm declaration as recently as May 2024. Precipitation runs 39.7 inches per year (NOAA Climate Data Online, 2025), near the national midpoint.
The coastal position adds a layer of risk that interior Maine counties don't carry. Four hurricane declarations since 1991, including a federal emergency declaration in September 2023, reflect that exposure.
The pattern is frequency, not catastrophe. Not one defining event but a steady rotation of nor'easters, coastal storms, and spring floods that keeps the county active on FEMA's ledger year after year. For buyers, that means insurance costs and infrastructure quality deserve a harder look than they might further inland.
Financial Profile
Total deposits across 22 bank branches reached $3.3 billion (FDIC Summary of Deposits, 2023). That's roughly $150 million per branch, reflecting both the county's wealth and the consolidation of banking into fewer locations. The branch count is higher than 78% of U.S. counties (FDIC Summary of Deposits, 2023).
IRS data shows 166,680 tax returns filed with total income of $17.5 billion (IRS Statistics of Income, 2021). Average income per return of $104,745 places Cumberland higher than 94% of counties nationally.
Social Security beneficiaries total 70,595 (SSA OASDI, 2024). That's about 23% of the total population, a figure consistent with Maine's older-than-average population. The ratio of beneficiaries to the county's labor force (175,184) is roughly 1 to 2.5, meaning the working population still substantially outnumbers those drawing Social Security.
Key Comparisons
Cumberland County consistently ranks at or near the top of Maine and in the top 5 to 10% nationally across economic indicators. Here's how the numbers stack up:
Income: Median household income of $92,983 (Census ACS 5-Year, 2023) exceeds the national median of roughly $75,000 by about 24%. Per capita income of $54,238 is higher than 97% of U.S. counties.
Education: At 52.2% bachelor's attainment (Census ACS 5-Year, 2023), the county more than doubles many rural counties. Per-pupil spending of $20,519 (Education Data Portal, 2020) runs well above the national average.
Employment: The 2.5% unemployment rate (BLS LAUS, 2025) is less than half the typical national rate. Poverty at 6.8% (Census ACS 5-Year, 2023) is a fraction of the national average near 12%.
Health: Obesity at 26.7% and diabetes at 7.4% (CDC PLACES, 2023) are lower than nearly all U.S. counties. Depression at 26.7% is an outlier in the opposite direction, higher than most.
Housing: Home values at $411,400 and rents at $1,492 (Census ACS 5-Year, 2023) are high nationally but track with income levels. The county isn't cheap, but it's not disproportionately expensive relative to what people earn.
The consistent pattern: Cumberland County performs well above state and national averages on economic and physical health measures, while mental health and graduation rates sit closer to the middle.
Data Sources
- Census ACS 5-Year, 2023 (population, income, housing, demographics, education attainment, commute, poverty)
- BLS LAUS, 2025 (unemployment, labor force, employment)
- CDC PLACES, 2023 (health metrics, insurance coverage)
- FEMA OpenFEMA, 2026 (disaster declarations and history)
- IRS Statistics of Income, 2021 (tax returns, AGI, total income)
- FDIC Summary of Deposits, 2023 (bank branches, total deposits)
- NOAA Climate Data Online, 2025 (temperature, precipitation, snowfall)
- SSA OASDI, 2024 (Social Security beneficiaries)
- Education Data Portal, 2019/2020/2021 (per-pupil spending, enrollment, student-teacher ratio, graduation rate)
- USDA Census of Agriculture, 2022 (no data available for this county)