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Charleston County, South Carolina
Charleston County anchors South Carolina's coast, spanning the historic Charleston peninsula, the port and industrial base of North Charleston, and the fast-growing East Cooper suburbs of Mount Pleasant and Johns Island. The Port of Charleston and Boeing's 787 assembly plant underpin a logistics-and-aerospace economy layered on tourism, while marsh and barrier-island geography sharply limit new buildable land.
Open the live Charleston County map →
Charleston County at a glance
- 436,000Population (2025)
- CharlestonCounty seat
- 918 sq miLand area
- 475 / sq miDensity
- $88,000Median household income
- $490,000Median home value
What the live Charleston County map shows
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- City Boundaries: 17
- School Boundaries: 1
- Zoning: 39
- Traffic Counts: 299
- Congressional Districts: 3
- County Commissioner Districts: 9
- Emergency Services: 1
- Evacuation Zones: 2
- Flood Zones: 4
- HUD: 2
- Opportunity Zones: 1
- Parks & Golf: 4
- Schools: 66
- Soils: 104
- State House Districts: 12
- State Senate Districts: 9
- Zip Codes: 38
- Development News: 2
Cities and towns in Charleston County
Awendaw, Charleston, Folly Beach, Hollywood, Isle of Palms, James Island, Kiawah Island, Lincolnville, McClellanville, Meggett, Mount Pleasant, North Charleston, Ravenel, Rockville, Seabrook Island, Sullivan's Island, Summerville.
Neighboring counties
- Berkeley County, SC · map
- Dorchester County, SC · map
- Colleton County, SC · map
- Georgetown County, SC · map