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.
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 (88.1%)
Two or more races (8.0%)
Asian (2.6%)
Other race (1.3%)
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