Coos County's estimated 2026 population is 30,864 with a growth rate of -0.37% 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 -6.39% since that time.
Data after 2023 is projected based on recent change
The racial composition of Coos County includes 94.34% White, and smaller percentages for Black or African American, other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (94.34%)
Two or more races (3.27%)
Black or African American (1.71%)
Other race (0.27%)
Asian (0.26%)
Native American (0.14%)
Native Hawaiian or Pacific Islander (0%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 29,611 | 94.34% |
| Two or more races | 1,026 | 3.27% |
| Black or African American | 536 | 1.71% |
| Other race | 86 | 0.27% |
| Asian | 82 | 0.26% |
| Native American | 44 | 0.14% |
| Native Hawaiian or Pacific Islander | 1 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Coos County's average per capita income is $40,590. Household income levels show a median of $58,439. The poverty rate stands at 12.86%.
Name | Median | Mean |
|---|---|---|
| Married Families | $90,661 | - |
| Families | $82,200 | $103,391 |
| Households | $58,439 | $82,759 |
| Non Families | $34,036 | $47,793 |
Average Income
Median Household Income
Poverty Rate