Grantham town is located in Sullivan County, New Hampshire. Grantham town has a 2026 population of 3,483. Grantham town is currently growing at a rate of 0.03% annually and its population has increased by 2.17% since the most recent census, which recorded a population of 3,409 in 2020.
The median household income in Grantham town is $113,510 with a poverty rate of 0%. The median age in Grantham town is 51 years: 53.5 years for males, and 50.6 years for females. For every 100 females there are 81.2 males.
Data after 2023 is projected based on recent change
The racial composition of Grantham town includes 100% White, and smaller percentages for and multiracial populations.
White (100%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,434 | 100% |
Married
Widowed
Divorced
Separated
Never Married
Grantham town's average per capita income is $75,071. Household income levels show a median of $113,510. The poverty rate stands at 0%.
Name | Median | Mean |
|---|---|---|
| Married Families | $159,200 | - |
| Families | $134,833 | $164,026 |
| Households | $113,510 | $145,971 |
| Non Families | $60,818 | $66,531 |
Average Income
Median Household Income
Poverty Rate