Cumberland County's estimated 2026 population is 318,911 with a growth rate of 0.81% in the past year according to the most recent United States census data. Cumberland County is the largest county in Maine. The 2010 population was 281,481 and has seen a growth of 13.3% since that time.
Data after 2023 is projected based on recent change
The racial composition of Cumberland County includes 87.55% White, 3.34% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (87.55%)
Two or more races (5.96%)
Black or African American (3.34%)
Asian (2.12%)
Other race (0.8%)
Native American (0.22%)
Native Hawaiian or Pacific Islander (0.02%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 267,862 | 87.55% |
| Two or more races | 18,238 | 5.96% |
| Black or African American | 10,209 | 3.34% |
| Asian | 6,473 | 2.12% |
| Other race | 2,433 | 0.8% |
| Native American | 662 | 0.22% |
| Native Hawaiian or Pacific Islander | 63 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Cumberland County's average per capita income is $56,852. Household income levels show a median of $92,983. The poverty rate stands at 7.06%.
Name | Median | Mean |
|---|---|---|
| Married Families | $135,168 | $173,799 |
| Families | $120,394 | $158,095 |
| Households | $92,983 | $125,434 |
| Non Families | $54,474 | $73,291 |
Average Income
Median Household Income
Poverty Rate
