Penobscot County's estimated 2026 population is 158,651 with a growth rate of 0.43% in the past year according to the most recent United States census data. Penobscot County is the 3rd largest county in Maine. The 2010 population was 153,864 and has seen a growth of 3.11% since that time.
Data after 2023 is projected based on recent change
Overall: 42.5 years
Female: 43.9 years
Male: 41.1 years
There are 127,461 adults, (31,088 of whom are seniors) in Penobscot County.
Female: 77,861 (50.3%)
Male: 76,849 (49.7%)
The racial composition of Penobscot County includes 91.78% White, and smaller percentages for Black or African American, Asian, Native American, other race, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 141,988 | 91.78% |
| Two or more races | 6,483 | 4.19% |
| Black or African American | 1,803 | 1.17% |
| Asian | 1,696 | 1.1% |
| Native American | 1,330 | 0.86% |
| Other race | 1,328 | 0.86% |
| Native Hawaiian or Pacific Islander | 82 | 0.05% |
Penobscot County's average per capita income is $46,621. Household income levels show a median of $66,356. The poverty rate stands at 14.1%.
Name | Median | Mean |
|---|---|---|
| Married Families | $103,273 | $123,009 |
| Families | $91,546 | $110,241 |
| Households | $66,356 | $88,290 |
| Non Families | $37,938 | $51,348 |
Average Income
Median Household Income
Poverty Rate
