Charleston County's 2026 population is estimated at 439,143, reflecting a 0.67% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Charleston County is the 3rd largest county in South Carolina. The 2010 population was 350,998 and has grown 25.11% since 2010.
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