How many people live in Colleton County, SC?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 39,300 people living in Colleton County, SC. That makes Colleton County the 26th-most populous county in South Carolina. It is home to 0.7% of people living in the state.
39.3K
population of Colleton County, SC (2024)
0.7%
County share of the South Carolina population (2024)
About 39,300 people lived in Colleton County, SC in 2024.
Population estimates, 2000–2024
What are Colleton County, SC’s age demographics?
About 8,300 Colleton County, SC residents are aged 65 and older in 2024. That represents 21% of its population. For comparison, the age group represents 19.8% of South Carolina’s population and 18% in the US overall.
Another 8,900 Colleton County residents, or 22.6% of the population, were children under 18. For comparison, the age group represents 21.2% of South Carolina’s population and 21.6% in the US overall.
A lower share of Colleton County, SC's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Colleton County, SC’s racial and ethnic demographics?
Non-Hispanic Black or African American residents make up 34.2% of the Colleton County, SC population, higher than the national share of 12.6%. Colleton County, SC also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (0.86%) than the US overall (0.72%).
In contrast, Colleton County’s Hispanic population accounts for 5.7%, below the 20% nationwide, and the non-Hispanic Asian population makes up 0.61% of the county, compared with 6.5% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Colleton County, SC has a higher share of a non-Hispanic Black or African American population than South Carolina as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Colleton County, SC is Walterboro with about 5,500 residents in 2024.
Cities and towns in Colleton County, SC ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Walterboro | 5,488 |
| 2. | Edisto Beach | 1,060 |
| 3. | Cottageville | 720 |
| 4. | Smoaks | 98 |
| 5. | Williams | 97 |
| 6. | Lodge | 82 |
| 7. | Balance of Colleton County | 31,714 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
