Williamsburg County's estimated 2025 population is 29,447 with a growth rate of -0.75% in the past year according to the most recent United States census data. Williamsburg County is the 31st largest county in South Carolina. The 2010 population was 34,342 and has seen a growth of -14.25% 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, Native Hawaiian or Pacific Islander and multiracial populations.
Black or African American
White
Other race
Two or more races
Asian
Native American
Native Hawaiian or Pacific Islander
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% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
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