Seabrook is a CDP located in Barnstable County, Massachusetts. Seabrook has a 2025 population of 630 . Seabrook is currently growing at a rate of 1.94% annually and its population has increased by 21.15% since the most recent census, which recorded a population of 520 in 2020.
The average household income in Seabrook is $146,249 with a poverty rate of 0.93%. The median age in Seabrook is 59 years: 57.9 years for males, and 59.6 years for females. For every 100 females there are 84.7 males.
Data after 2023 is projected based on recent change
The racial composition of Seabrook includes 96.7% White, and smaller percentages for and multiracial populations.
White (96.7%)
Two or more races (3.3%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 527 | 96.7% |
| Two or more races | 18 | 3.3% |
Married
Widowed
Divorced
Separated
Never Married
Seabrook's average per capita income is $0. Household income levels show a median of $0. The poverty rate stands at 0.93%.
Name | Median | Mean |
|---|---|---|
| Families | $116,477 | $156,735 |
| Non Families | $64,783 | $100,430 |
| Households | - | $146,249 |
| Married Families | - | - |
Average Income
Median Household Income
Poverty Rate