Williamsburg County's estimated 2026 population is 29,539 with a growth rate of -0.55% 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 -13.99% since that time.
Data after 2023 is projected based on recent change
The racial composition of Williamsburg County includes 64.02% Black or African American, 32.68% White, and smaller percentages for other race, Two or more races, Asian, Native American and multiracial populations.
Black or African American (64.02%)
White (32.68%)
Other race (1.44%)
Two or more races (0.87%)
Asian (0.67%)
Native American (0.32%)
Race | Population | Percentage (of total) |
|---|---|---|
| Black or African American | 19,538 | 64.02% |
| White | 9,973 | 32.68% |
| Other race | 439 | 1.44% |
| Two or more races | 265 | 0.87% |
| Asian | 205 | 0.67% |
| Native American | 97 | 0.32% |
Married
Widowed
Divorced
Separated
Never Married
Williamsburg County's average per capita income is $35,743. Household income levels show a median of $43,471. The poverty rate stands at 23.6%.
Name | Median | Mean |
|---|---|---|
| Married Families | $67,321 | - |
| Families | $56,399 | $73,611 |
| Households | $43,471 | $57,757 |
| Non Families | $18,755 | $31,197 |
Average Income
Median Household Income
Poverty Rate