Founded in 1769, Charleston County is one of 46 counties in the state of South Carolina. Historically, Charleston County was formed from 1769 Judicial District. The city of Charleston is the county seat. With FIPS code of 19, Charleston County has a population of 413,024 and area of 1,358 square miles (3,517 km2).
List of all cities in Charleston County, SC alphabetically
| City/Town | Postal Code | Area Code |
| Adams Run, SC | 29426 | 843 |
| Awendaw, SC | 29429 | 843 |
| Charleston, SC | 29401 | 843 |
| 29402 | 843 | |
| 29403 | 843 | |
| 29404 | 843 | |
| 29405 | 843 | |
| 29406 | 843 | |
| 29407 | 843 | |
| 29409 | 843 | |
| 29412 | 843 | |
| 29413 | 843 | |
| 29414 | 843 | |
| 29415 | 843 | |
| 29416 | 843 | |
| 29417 | 843 | |
| 29418 | 843 | |
| 29419 | 843 | |
| 29422 | 843 | |
| 29423 | 843 | |
| 29424 | 843 | |
| 29425 | 843 | |
| Charleston AFB, SC | 29404 | 843 |
| Charleston Heights, SC | 29418 | 843 |
| 29405 | 843 | |
| Dewees Island, SC | 29451 | 843 |
| Folly Beach, SC | 29439 | 843 |
| Hollywood, SC | 29449 | 843 |
| Isle of Palms, SC | 29451 | 843 |
| James Island, SC | 29412 | 843 |
| Jericho, SC | 29426 | 843 |
| Johns Island, SC | 29455 | 843 |
| 29457 | 843 | |
| Kiawah Island, SC | 29455 | 843 |
| McClellanville, SC | 29458 | 843 |
| 29458 | 843 | |
| Meggett, SC | 29449 | 843 |
| Mount Pleasant, SC | 29464 | 843 |
| 29465 | 843 | |
| 29466 | 843 | |
| North Charleston, SC | 29404 | 843 |
| 29405 | 843 | |
| 29406 | 843 | |
| 29415 | 843 | |
| 29418 | 843 | |
| 29419 | 843 | |
| Osborn, SC | 29426 | 843 |
| Pinehaven, SC | 29405 | 843 |
| Rantowels, SC | 29449 | 843 |
| Ravenel, SC | 29470 | 843 |
| Saint Andrews, SC | 29407 | 843 |
| Seabrook Island, SC | 29455 | 843 |
| Sullivans Island, SC | 29482 | 843 |
| The Citadel, SC | 29409 | 843 |
| Wadmalaw Island, SC | 29487 | 843 |
| Yonges Island, SC | 29449 | 843 |