Sullivan is located in Cheshire County, New Hampshire. Sullivan has a 2025 population of 707 . Sullivan is currently growing at a rate of 1.73% annually and its population has increased by 7.45% since the most recent census, which recorded a population of 658 in 2020.
The average household income in Sullivan is $108,265 with a poverty rate of 4.15%. The median age in Sullivan is 46.8 years: 46.5 years for males, and 46.9 years for females. For every 100 females there are 92.0 males.
Data after 2023 is projected based on recent change
The racial composition of Sullivan includes 88.13% White, and smaller percentages for Asian, other race and multiracial populations.
White (88.13%)
Two or more races (8.01%)
Asian (2.58%)
Other race (1.29%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 616 | 88.13% |
| Two or more races | 56 | 8.01% |
| Asian | 18 | 2.58% |
| Other race | 9 | 1.29% |
Married
Widowed
Divorced
Separated
Never Married
Sullivan's average per capita income is $49,792. Household income levels show a median of $95,625. The poverty rate stands at 4.15%.
Name | Median | Mean |
|---|---|---|
| Married Families | $106,442 | - |
| Families | $105,438 | $124,787 |
| Households | $95,625 | $108,265 |
| Non Families | $43,750 | $57,258 |
Average Income
Median Household Income
Poverty Rate