Seabrook Island

County:: Charleston County
County Seat:: No
Area (mi²):: 5.938
State:: South Carolina

Seabrook Island is a town located in Charleston County, South Carolina. Seabrook Island has a 2025 population of 2,135. Seabrook Island is currently growing at a rate of 0.76% annually and its population has increased by 3.89% since the most recent census, which recorded a population of 2,055 in 2020.

The average household income in Seabrook Island is $207,605 with a poverty rate of 4.6%.The median age in Seabrook Island is 68.5 years: 69.1 years for males, and 68.2 years for females.

Demographics

The racial composition of Seabrook Island includes 96.82% White, and smaller percentages for Two or more races, Asian, Black or African American, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	2,040	96.82%
Two or more races	43	2.04%
Asian	14	0.66%
Black or African American	9	0.43%
Native American	1	0.05%

Seabrook Island Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Seabrook Island's average per capita income is $80,147. Household income levels show a median of $124,519. The poverty rate stands at 4.6%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$170,208	-
Families	$169,803	$257,670
Households	$124,519	$207,605
Non Families	$71,059	$74,871

$80,147

Average Income

$124,519

Median Household Income

4.6%

Poverty Rate