Sullivan County's estimated 2026 population is 44,024 with a growth rate of 0.01% in the past year according to the most recent United States census data. Sullivan County is the 9th largest county in New Hampshire. The 2010 population was 43,744 and has seen a growth of 0.64% since that time.
Data after 2023 is projected based on recent change
The racial composition of Sullivan County includes 92.29% White, and smaller percentages for other race, Black or African American, Asian, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
White (92.29%)
Two or more races (4.69%)
Other race (1.58%)
Black or African American (0.85%)
Asian (0.55%)
Native Hawaiian or Pacific Islander (0.02%)
Native American (0.02%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 40,174 | 92.29% |
| Two or more races | 2,043 | 4.69% |
| Other race | 687 | 1.58% |
| Black or African American | 371 | 0.85% |
| Asian | 238 | 0.55% |
| Native Hawaiian or Pacific Islander | 9 | 0.02% |
| Native American | 7 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Sullivan County's average per capita income is $50,384. Household income levels show a median of $75,929. The poverty rate stands at 10.8%.
Name | Median | Mean |
|---|---|---|
| Married Families | $108,298 | - |
| Families | $96,832 | $119,883 |
| Households | $75,929 | $102,029 |
| Non Families | $43,329 | $68,139 |
Average Income
Median Household Income
Poverty Rate