Williamsburg County, South Carolina Demographics 2026

Population Overview

Williamsburg County is located in South Carolina with a total population of 30,517. It is the 31st most populous county out of 46 in South Carolina.

Age Demographics

The median age in Williamsburg County is 44.0 years. This is 10% higher than the state median of 40.1 years.

Economy, Income & Housing

The median household income in Williamsburg County is $43,471. This is 35% lower than the state median of $66,818. Compared to the national median of $78,538, household income here is 45% lower. The poverty rate stands at 23.6%. This is 66% higher than the state poverty rate of 14.2%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 4.9%. The median home value is $95,100. Housing costs are 60% lower than the state median of $236,700. With a home-value-to-income ratio of just 2.2x, Williamsburg County is one of the most affordable housing markets in the area. 74.6% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 71.4%.

Race & Ethnicity

The largest racial or ethnic group in Williamsburg County is Black or African American, making up 63.9% of the population. White (non-Hispanic) residents account for 31.9%. The Black or African American population is significantly higher than the state average (63.9% vs 25.1%). The Hispanic or Latino population (2.4%) is well below the state average of 7.1%. The Asian population (0.7%) is well below the state average of 1.7%.

Education

15.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 51% lower than the state rate of 31.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 83.4%.