Williamsburg County's estimated 2026 population is 29,523 with a growth rate of -0.47% in the past year according to the most recent United States census data. Williamsburg County is the 32nd largest county in South Carolina. The 2010 population was 34,342 and has seen a growth of -14.03% since that time.
Data after 2023 is projected based on recent change
Overall: 43.2 years
Female: 46.8 years
Male: 40.1 years
There are 24,400 adults, (6,867 of whom are seniors) in Williamsburg County.
Female: 15,485 (51.1%)
Male: 14,797 (48.9%)
The racial composition of Williamsburg County includes 63.35% Black or African American, 32.86% White, and smaller percentages for Two or more races, other race, Asian, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| Black or African American | 19,185 | 63.35% |
| White | 9,950 | 32.86% |
| Two or more races | 446 | 1.47% |
| Other race | 318 | 1.05% |
| Asian | 238 | 0.79% |
| Native American | 145 | 0.48% |
Williamsburg County's average per capita income is $37,062. Household income levels show a median of $46,213. The poverty rate stands at 23.33%.
Name | Median | Mean |
|---|---|---|
| Married Families | $70,167 | - |
| Families | $59,415 | $75,909 |
| Households | $46,213 | $59,459 |
| Non Families | $20,605 | $32,142 |
Average Income
Median Household Income
Poverty Rate