Sullivan's Island Flag

Sullivan's Island

County Seat:
No
Area (mi²):
2.498

Sullivan's Island is a town located in Charleston County, South Carolina. Sullivan's Island has a 2026 population of 1,974. Sullivan's Island is currently growing at a rate of 0.66% annually and its population has increased by 4.11% since the most recent census, which recorded a population of 1,896 in 2020.

The median household income in Sullivan's Island is $192,813 with a poverty rate of 8.82%. The median age in Sullivan's Island is 52.5 years: 49.2 years for males, and 57.3 years for females. For every 100 females there are 100.7 males.

2K
Total Population
790
Density (mi²)
13 0.66%
Growth

Sullivan's Island Population

Sullivan's Island Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,974130.66%
20251,961130.67%
20241,948180.93%
20231,930180.94%
20221,912191%
20211,893-3-0.16%
20201,89630.16%
20191,92840.21%
20181,924-6-0.31%
20171,93030.16%
20161,927201.05%
20151,907231.22%
20141,884211.13%
20131,863261.42%
20121,837170.93%
20111,820291.62%
20101,79340.22%

Median Age

Overall: 52.5 years
Female: 57.3 years
Male: 49.2 years

Sullivan's Island Adults

There are 1,666 adults, (588 of whom are seniors) in Sullivan's Island.

Sex Ratio

Female: 1,040 (49.8%)
Male: 1,047 (50.2%)

Demographics

The racial composition of Sullivan's Island includes 98.99% White, and smaller percentages for Two or more races, Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2,06698.99%
Two or more races130.62%
Black or African American80.38%
Race
Population ↓
Percentage (of total)
White522.49%
Two or more races30.14%
Race
Population ↓
Percentage (of total)
White2,01496.5%
Two or more races100.48%
Black or African American80.38%

Sullivan's Island Marital Status

Economics and Income Statistics

Sullivan's Island 's average per capita income is $91,964. Household income levels show a median of $192,813. The poverty rate stands at 8.82%.

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$250,001$366,513
Married Families$250,001-
Households$192,813$298,004
Non Families$121,364$125,436

$91,964

Average Income

$192,813

Median Household Income

8.82%

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)