Penobscot County's estimated 2025 population is 156,480 with a growth rate of 0.37% 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 1.7% since that time.
Data after 2023 is projected based on recent change
The racial composition of Penobscot County includes 92.11% White, and smaller percentages for Asian, Black or African American, Native American, other race, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Asian
Black or African American
Native American
Other race
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 141,450 | 92.11% |
| Two or more races | 5,970 | 3.89% |
| Asian | 1,737 | 1.13% |
| Black or African American | 1,563 | 1.02% |
| Native American | 1,414 | 0.92% |
| Other race | 1,366 | 0.89% |
| Native Hawaiian or Pacific Islander | 71 | 0.05% |
Married
Widowed
Divorced
Separated
Never Married
Penobscot County's average per capita income is $44,520. Household income levels show a median of $63,248. The poverty rate stands at 13.55%.
Name | Median | Mean |
|---|---|---|
| Married Families | $99,642 | $119,791 |
| Families | $88,740 | $107,364 |
| Households | $63,248 | $84,825 |
| Non Families | $36,508 | $48,809 |
Average Income
Median Household Income
Poverty Rate
