Charleston County's estimated 2026 population is 439,143 with a growth rate of 0.67% in the past year according to the most recent United States census data. Charleston County is the 3rd largest county in South Carolina. The 2010 population was 350,998 and has seen a growth of 25.11% since that time.
Data after 2023 is projected based on recent change
Overall: 39.2 years
Female: 40.2 years
Male: 38.3 years
There are 338,379 adults, (75,028 of whom are seniors) in Charleston County.
Female: 216,555 (51.5%)
Male: 203,709 (48.5%)
The racial composition of Charleston County includes 65.9% White, 22.9% Black or African American, and smaller percentages for other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 276,973 | 65.9% |
| Black or African American | 96,255 | 22.9% |
| Two or more races | 25,211 | 6% |
| Other race | 11,957 | 2.85% |
| Asian | 7,521 | 1.79% |
| Native American | 1,909 | 0.45% |
| Native Hawaiian or Pacific Islander | 438 | 0.1% |
Charleston County's average per capita income is $56,128. Household income levels show a median of $88,494. The poverty rate stands at 11.32%.
Name | Median | Mean |
|---|---|---|
| Married Families | $138,052 | $186,432 |
| Families | $117,945 | $162,118 |
| Households | $88,494 | $131,674 |
| Non Families | $56,042 | $86,192 |
Average Income
Median Household Income
Poverty Rate