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Where am ILOCATED

Charleston County, South Carolina

Charleston County, South Carolina, has 436,200 residents (July 2025 estimate). Its county seat is Charleston. It uses Eastern Time and covers 918 sq mi (2,378 km²) of land.

CharlestonColumbia
Charleston County in South Carolina
Dorchester CountyCharlestonNorth CharlestonSummerville
Charleston County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
436,200
Land area
918 sq mi (2,378 km²)
County seat or government
Charleston
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$88,494 ± $1,950
Median home value
$489,100 ± $9,282
Median rent, with utilities
$1,620 ± $36
Homes lived in by their owners
63.9% ± 0.8 points
County type
County
Metro or micro area
Charleston-North Charleston, SC metro areaCentral county
Water area
449 sq mi (1,162 km²)
State
South Carolina
County code (FIPS)
45019
Coordinates (central point)
32.800458, -79.942480
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Charleston County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 2944559,227 people
  2. 2948359,186 people
  3. 2948558,507 people
  4. 2946453,045 people
  5. 2946644,942 people
  6. 2941444,727 people
  7. 2945641,214 people
  8. 2941239,256 people
  9. 2940736,706 people
  10. 2940632,001 people
  11. 2945527,576 people
  12. 2944027,319 people
All 37
  1. 2940526,254 people
  2. 2941826,052 people
  3. 2942023,959 people
  4. 2940322,533 people
  5. 2941021,314 people
  6. 2949220,436 people
  7. 294019,339 people
  8. 294498,024 people
  9. 294705,639 people
  10. 294294,479 people
  11. 294514,362 people
  12. 294503,309 people
  13. 294382,826 people
  14. 294872,703 people
  15. 294582,505 people
  16. 294042,334 people
  17. 294822,087 people
  18. 294092,056 people
  19. 294261,697 people
  20. 294531,517 people
  21. 294241,243 people
  22. 294461,184 people
  23. 294391,125 people
  24. 29452318 people
  25. 294250 people

37 ZIP Code areas overlap Charleston County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Charleston County, largest first

  1. Charleston County School District420,264 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Charleston, South Carolina (city)154,338 people
  2. North Charleston, South Carolina (city)119,913 people
  3. Mount Pleasant, South Carolina (town)93,993 people
  4. Summerville, South Carolina (town)51,654 people
  5. Ladson, South Carolina (CDP)16,140 people
  6. James Island, South Carolina (town)12,198 people
  7. Hollywood, South Carolina (town)5,382 people
  8. Isle of Palms, South Carolina (city)4,362 people
  9. Ravenel, South Carolina (town)2,615 people
  10. Kiawah Island, South Carolina (town)2,326 people
  11. Seabrook Island, South Carolina (town)2,204 people
  12. Sullivan's Island, South Carolina (town)2,087 people
All 19
  1. Awendaw, South Carolina (town)1,772 people
  2. Meggett, South Carolina (town)1,307 people
  3. Folly Beach, South Carolina (city)1,267 people
  4. Lincolnville, South Carolina (town)1,064 people
  5. McClellanville, South Carolina (town)690 people
  6. Adams Run, South Carolina (CDP)469 people
  7. Rockville, South Carolina (town)121 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Berkeley County, South Carolina28 mi north
  2. Dorchester County, South Carolina33 mi northwest
  3. Colleton County, South Carolina42 mi west
  4. Georgetown County, South Carolina57 mi northeast

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.