South Carolina Counties Directory & Interactive Map
Complete official guide to all 46 counties in South Carolina (SC). Explore 2024 US Census population estimates, county seats, FIPS codes, land areas, and interactive mapping tools powered by GeoMap Suite.
South Carolina County Breakdown
Showing 7 of 7 documented counties and seats.
County Name | FIPS | County Seat | Population (Census) | Land Area | Quick Tool |
|---|---|---|---|---|---|
| Greenville County | 45045 | Greenville | 525,534 | 789 sq mi | Lookup |
| Richland County (Columbia) | 45079 | Columbia | 416,147 | 757 sq mi | Lookup |
| Charleston County | 45019 | Charleston | 408,235 | 919 sq mi | Lookup |
| Horry County (Myrtle Beach) | 45051 | Conway | 351,029 | 1,134 sq mi | Lookup |
| Spartanburg County | 45083 | Spartanburg | 327,997 | 811 sq mi | Lookup |
| Lexington County | 45063 | Lexington | 293,991 | 699 sq mi | Lookup |
| York County (Rock Hill) | 45091 | York | 282,090 | 682 sq mi | Lookup |
Geographic Structure of South Carolina Counties
County Administration & Governance
In South Carolina, county governments manage vital public infrastructure, tax assessments, law enforcement, judicial courts, election administration, and public records. The county seat (Greenville and other municipal headquarters) houses the primary courthouse, commissioners, and sheriff’s department.
All South Carolina counties carry a unique 5-digit Federal Information Processing Standard (FIPS) code, where the first two digits (45) designate the state and the remaining three digits identify each specific jurisdiction.
Geographic & Demographic Highlights
- Most Populous County:Greenville County (525,534 residents)
- Largest by Land Area:Horry County (Myrtle Beach) (1,134 sq mi)
- State Capital:Columbia
- Census Bureau Region:South United States
Demographic calculations derive from the United States Census Bureau 2024 Population Estimates Program (PEP) and TIGER/Line geographic boundary files.