Belknap County's 2026 population is estimated at 65,733, reflecting a 0.36% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Belknap County is the 7th largest county in New Hampshire. The 2010 population was 60,101 and has grown 9.37% since 2010.
Data after 2023 is projected based on recent change
Overall: 48.4 years
Female: 49.2 years
Male: 47.3 years
There are 53,470 adults, (15,492 of whom are seniors) in Belknap County.
Female: 32,517 (50.3%)
Male: 32,142 (49.7%)
The racial composition of Belknap County includes 93.15% White, and smaller percentages for other race, Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 60,232 | 93.15% |
| Two or more races | 2,482 | 3.84% |
| Other race | 821 | 1.27% |
| Asian | 744 | 1.15% |
| Black or African American | 342 | 0.53% |
| Native American | 20 | 0.03% |
| Native Hawaiian or Pacific Islander | 18 | 0.03% |
Belknap County 's average per capita income is $54,339. Household income levels show a median of $92,783. The poverty rate stands at 8.48%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $120,830 | - |
| Families | $111,916 | $136,131 |
| Households | $92,783 | $116,878 |
| Non Families | $46,131 | $70,801 |
Average Income
Median Household Income
Poverty Rate