Harbor Island

County:: Beaufort County
County Seat:: No
Area (mi²):: 1.027
State:: South Carolina

Harbor Island is a CDP located in Beaufort County, South Carolina. Harbor Island has a 2025 population of 346. Harbor Island is currently growing at a rate of 7.12% annually and its population has increased by 9.49% since the most recent census, which recorded a population of 316 in 2020.

The average household income in Harbor Island is $88,075 with a poverty rate of 4.19%. The median age in Harbor Island is 69.5 years: 69.4 years for males, and 70.1 years for females.

Demographics

The racial composition of Harbor Island includes 97.1% White, and smaller percentages for Two or more races, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	301	97.1%
Two or more races	9	2.9%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Harbor Island Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Harbor Island's average per capita income is $0. Household income levels show a median of $100,250. The poverty rate stands at 4.19%.

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
Families	$100,475	$94,465
Married Families	$100,475	-
Households	$100,250	$88,075
Non Families	-	$62,290

$0

Average Income

$100,250

Median Household Income

4.19%

Poverty Rate