Harbor Island Flag

Harbor Island

County:
Beaufort County
County Seat:
No
Area (mi²):
1.027

Harbor Island is a CDP located in Beaufort County, South Carolina. Harbor Island has a 2026 population of 382. Harbor Island is currently growing at a rate of 6.7% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Harbor Island is $105,425 with a poverty rate of 9.24%. The median age in Harbor Island is 69.6 years: 69.5 years for males, and 70.3 years for females. For every 100 females there are 140.5 males.

382
Total Population
372
Density (mi²)
24 6.7%
Growth

Harbor Island Population

Harbor Island Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026382246.7%
2025358247.19%

Median Age

Overall: 69.6 years
Female: 70.3 years
Male: 69.5 years

Harbor Island Adults

There are 303 adults, (232 of whom are seniors) in Harbor Island.

Sex Ratio

Female: 126 (41.6%)
Male: 177 (58.4%)

Demographics

The racial composition of Harbor Island includes 97.36% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White29597.36%
Two or more races82.64%
Race
Population ↓
Percentage (of total)
White29597.36%
Two or more races82.64%

Harbor Island Marital Status

Economics and Income Statistics

Harbor Island 's average per capita income is $30,833. Household income levels show a median of $105,425. The poverty rate stands at 9.24%.

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$105,600$95,748
Married Families$105,475-
Households$105,425$88,339
Non Families$2,499$59,214

$30,833

Average Income

$105,425

Median Household Income

9.24%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)