Seabrook is located in Rockingham County, New Hampshire. Seabrook has a 2025 population of 8,462 . Seabrook is currently growing at a rate of 0.36% annually and its population has increased by 0.68% since the most recent census, which recorded a population of 8,405 in 2020.
The average household income in Seabrook is $112,448 with a poverty rate of 10.95%. The median age in Seabrook is 53.2 years: 49.3 years for males, and 54.6 years for females. For every 100 females there are 104.9 males.
Data after 2023 is projected based on recent change
The racial composition of Seabrook includes 89.46% White, and smaller percentages for Black or African American, Asian and multiracial populations.
White (89.46%)
Two or more races (9.05%)
Black or African American (0.76%)
Asian (0.72%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 7,539 | 89.46% |
| Two or more races | 763 | 9.05% |
| Black or African American | 64 | 0.76% |
| Asian | 61 | 0.72% |
Married
Widowed
Divorced
Separated
Never Married
Seabrook's average per capita income is $51,800. Household income levels show a median of $87,021. The poverty rate stands at 10.95%.
Name | Median | Mean |
|---|---|---|
| Married Families | $111,944 | - |
| Families | $104,220 | $141,263 |
| Households | $87,021 | $112,448 |
| Non Families | $36,959 | $61,736 |
Average Income
Median Household Income
Poverty Rate