Williamsburg County, South Carolina
Located in South Carolina, Williamsburg County has a population of 30,282 residents and a median age of 43.2 years, making it the #1,474 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 23.3%. The median home value is $104,500, and the median household income is $46,213, which is 39% below the national median.
Demographics
Williamsburg County has a population of 30,282, making it the #1,474 most populous county in the US. The median age is 43.2 years, which is 11.1% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Williamsburg County is $46,213, ranking #2,926 out of 3,222 counties — 38.5% below the national median. The poverty rate is 23.3% and unemployment stands at 4.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Williamsburg County is $104,500 (-62.9% vs national). Renters pay a median of $765/mo and the homeownership rate is 76.4%.
Median Home Value Trend
Rankings →Household Type
Education
In Williamsburg County, 17.4% of adults age 25+ hold a bachelor's degree or higher, which is 48.4% below the national average, ranking #2,441 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Williamsburg County is 70.4 years. 25.0% of adults report poor or fair health and 11.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
20.9% of adults in Williamsburg County smoke , 47.2% are obese , and 15.6% report excessive drinking. The drug overdose death rate is 45.4 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Williamsburg County is 17.3 per 100,000 and the suicide rate is 8.6 per 100,000. Motor vehicle deaths occur at a rate of 43.4 per 100,000.
Homicide Rate Trend
Families & Children
31.6% of children in Williamsburg County live in poverty and the infant mortality rate is 9.3 per 1,000 live births. The teen birth rate is 23.9 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Williamsburg County is 66.5%. The mean commute time is 34.5 min, which is 25.0% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Williamsburg County voted Democratic with a margin of 21.8%. The vote was 60.3% Dem / 38.5% Rep. Compared to 2020, the margin shifted 8.0 toward Republicans .
Vote Share Over Time
About Williamsburg County, South Carolina
Williamsburg County, South Carolina has a total population of 30,282, making it the 1,474th most populous county in the United States. The median age in Williamsburg County is 43.2 years, which is 11.1% above the national median of 38.9 years.
The median household income in Williamsburg County is $46,213, which ranks #2,926 of 3,222 counties nationwide. This is 38.5% below the national median of $75,149. The poverty rate is 23.3%, higher than the national rate of 12.6%. The unemployment rate stands at 4.0%.
The median home value in Williamsburg County is $104,500, 62.9% below the national median. Renters in Williamsburg County pay a median gross rent of $765 per month. The homeownership rate is 76.4%, compared to the national rate of 64.4%.
In Williamsburg County, 17.4% of residents aged 25 and older hold a bachelor's degree or higher, 48.4% below the national average of 33.7%. Health insurance coverage stands at 89.1% of the population. The average commute time for workers is 34.5 min.
Williamsburg County is a diverse community. The largest racial or ethnic group is Black (non-Hispanic) at 63.1% of the population, followed by White (non-Hispanic) (32.2%) and Hispanic or Latino (2.5%).
All data for Williamsburg County, South Carolina comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.