Charleston County Flag

Charleston County

County Seat:

Charleston County's estimated 2025 population is 434,401 with a growth rate of 1.17% in the past year according to the most recent United States census data. Charleston County is the 2nd largest county in South Carolina. The 2010 population was 350,998 and has seen a growth of 23.76% since that time.

434,401
Total Population
473
Population Density (mi²)
2
Population Rank (State)
5K 1.17%
Annual Population Growth

Charleston County Population

Charleston County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Charleston County includes 66.15% White, 23.76% Black or African American, 3.14% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White274,35266.15%
Black or African American98,52023.76%
Two or more races19,7024.75%
Other race13,0073.14%
Asian7,2741.75%
Native American1,4110.34%
Native Hawaiian or Pacific Islander4450.11%

Charleston County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Charleston County's average per capita income is $53,910. Household income levels show a median of $84,320. The poverty rate stands at 11.64%.

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$131,530$180,607
Families$112,791$156,002
Households$84,320$126,878
Non Families$54,356$84,912

$53,910

Average Income

$84,320

Median Household Income

11.64%

Poverty Rate