How many people live in Charleston County, SC?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 431,000 people living in Charleston County, SC. That makes Charleston County the second-most populous county in South Carolina. It is home to 7.7% of people living in the state.
431K
population of Charleston County, SC (2024)
7.7%
County share of the South Carolina population (2024)
About 431,000 people lived in Charleston County, SC in 2024.
Population estimates, 2000–2024
What are Charleston County, SC’s age demographics?
About 80,600 Charleston County residents are aged 65 and older in 2024. That represents 18.7% of its population. For comparison, the age group represents 19.8% of South Carolina’s population and 18% in the US overall.
Another 82,400 Charleston County residents, or 19.1% 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 higher share of Charleston County, SC's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Charleston County, SC’s racial and ethnic demographics?
Non-Hispanic white residents make up 66.4% of the Charleston County, SC population, higher than the national share of 57.5%. Charleston County, SC also has a larger share of people identifying as non-Hispanic Black or African American (22.2%) than the US overall (12.6%).
In contrast, Charleston County’s Hispanic population accounts for 7.5%, below the 20% nationwide, and the non-Hispanic Asian population makes up 2% 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.
Charleston County, SC has a higher share of a non-Hispanic white population than South Carolina as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Charleston County, SC is Charleston with about 141,300 residents in 2024.
Cities and towns in Charleston County, SC ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Charleston (pt.) | 141,306 |
| 2. | Mount Pleasant | 95,604 |
| 3. | North Charleston (pt.) | 94,767 |
| 4. | James Island | 12,451 |
| 5. | Hollywood | 5,503 |
| 6. | Isle of Palms | 4,377 |
| 7. | Ravenel | 2,688 |
| 8. | Summerville (pt.) | 2,649 |
| 9. | Seabrook Island | 2,135 |
| 10. | Folly Beach | 2,084 |
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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.
