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.
Data after 2023 is projected based on recent change
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.
White (66.1%)
Black or African American (23.8%)
Two or more races (4.8%)
Other race (3.1%)
Asian (1.8%)
Native American (0.3%)
Native Hawaiian or Pacific Islander (0.1%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 274,352 | 66.15% |
| Black or African American | 98,520 | 23.76% |
| Two or more races | 19,702 | 4.75% |
| Other race | 13,007 | 3.14% |
| Asian | 7,274 | 1.75% |
| Native American | 1,411 | 0.34% |
| Native Hawaiian or Pacific Islander | 445 | 0.11% |
Married
Widowed
Divorced
Separated
Never Married
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%.
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 |
Average Income
Median Household Income
Poverty Rate