COUNTY · SC
Charleston County, South Carolina
Charleston County is a county in South Carolina with FIPS code 45019 and an estimated population of 424,367 (Census 2023), 3rd largest of 46 in the state.
County facts
- Name
- Charleston County
- State
- South Carolina
- Type
- county
- FIPS code
- 45019
- State FIPS
- 45
- Population (2023)
- 424,367
- Change since 2020
- +3.5%
- State rank
- 3 of 46
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Charleston County
Other counties in South Carolina
Questions
What is the FIPS code for Charleston County?
Charleston County, South Carolina has the five-digit FIPS code 45019: 45 for the state and 019 for the county.
What state is Charleston County in?
Charleston County is in South Carolina.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.