Charleston County, South Carolina

Charleston County, South Carolina, had an estimated population of 436,200 in 2025 across 2,378 km². The figures below come from the US Census Bureau's population estimates and the American Community Survey, each shown with its own vintage and its rank among South Carolina's counties and nationally.

Population
436,200
2025 estimate
Area
2,378 km²
Density
183
per km²
Median income
$88,494
household, ACS 2024
Median age
39.2
years, ACS 2024
How South Carolina's counties spread
Amenities & Infrastructure
IndicatorValue
Households with Broadband202488.9%
Median Gross Rent2024$1,620
Median Home Value2024$489,100
Owner-Occupied Homes202463.9%
Vacant Homes202414.7%
Demography
IndicatorValue
Aged 65 and Over202417.9%
American Indian & Alaska Native20240.1%
Asian, non-Hispanic20241.8%
Average Household Size2024people2.3
Black, non-Hispanic202422.7%
Foreign-Born20246.7%
Hispanic or Latino20247.2%
Median Age2024years39.2
Sex Ratio2024per 1,000 males1,063
Speak a Language Other Than English20249.0%
Under 18202419.5%
Veterans20248.2%
White, non-Hispanic202464.5%
Economy
IndicatorValue
Below Poverty Line202411.3%
Households on SNAP20246.4%
Income Inequality2024index0.511
Median Household Income2024$88,494
Per Capita Income2024$56,921
Unemployment Rate20243.5%
Education
IndicatorValue
Bachelor's Degree or Higher202450.3%
High School or Higher202493.5%
Health Coverage
IndicatorValue
No Health Insurance20248.3%
With a Disability202411.2%
Population & Density
IndicatorValue
Population2025436,200
Population Density2025/km²183
Work & Commute
IndicatorValue
Commute by Public Transit20240.9%
Households with No Vehicle20245.9%
Mean Commute Time2024minutes25.1
Work from Home202417.7%
Compare Charleston County against every other county on a map, add layers and run a scatter — open the atlas. Sources and vintages for every figure on this page are listed under datasets, or browse all 3,144 counties.