Colleton County, South Carolina Demographics 2026

Population Overview

Colleton County is located in South Carolina with a total population of 38,623. It is the 26th most populous county out of 46 in South Carolina.

Age Demographics

The median age in Colleton County is 42.2 years. This is 5% higher than the state median of 40.1 years.

Economy, Income & Housing

The median household income in Colleton County is $48,779. This is 27% lower than the state median of $66,818. Compared to the national median of $78,538, household income here is 38% lower. The poverty rate stands at 18.7%. This is 32% higher than the state poverty rate of 14.2%. The unemployment rate is 9.3%. This is 88% higher than the state rate of 5.0%. The median home value is $145,900. Housing costs are 38% lower than the state median of $236,700. The home-value-to-income ratio is 3.0x. 73.1% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 71.4%.

Race & Ethnicity

The largest racial or ethnic group in Colleton County is White (non-Hispanic), making up 56.6% of the population. Black or African American residents account for 34.6%. The Asian population (0.5%) is well below the state average of 1.7%.

Education

16.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 47% 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 85.6%.