Coos County's estimated 2026 population is 31,309 with a growth rate of -0.11% in the past year according to the most recent United States census data. Coos County is the 10th largest county in New Hampshire. The 2010 population was 32,970 and has seen a growth of -5.04% since that time.
Data after 2023 is projected based on recent change
Overall: 50.3 years
Female: 52.1 years
Male: 48.6 years
There are 26,257 adults, (8,152 of whom are seniors) in Coos County.
Female: 14,937 (47.8%)
Male: 16,334 (52.2%)
The racial composition of Coos County includes 93.24% White, and smaller percentages for Black or African American, other race, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 29,158 | 93.24% |
| Two or more races | 1,111 | 3.55% |
| Black or African American | 690 | 2.21% |
| Other race | 202 | 0.65% |
| Native American | 64 | 0.2% |
| Asian | 45 | 0.14% |
| Native Hawaiian or Pacific Islander | 1 | 0% |
Coos County's average per capita income is $40,373. Household income levels show a median of $57,677. The poverty rate stands at 13.21%.
Name | Median | Mean |
|---|---|---|
| Married Families | $92,799 | - |
| Families | $83,196 | $107,566 |
| Households | $57,677 | $83,445 |
| Non Families | $33,486 | $46,785 |
Average Income
Median Household Income
Poverty Rate