| Zip Code | City | Population ↓ |
|---|---|---|
| 29464 | Mount Pleasant | 51,259 |
| 29414 | Charleston | 44,196 |
| 29466 | Mount Pleasant | 43,233 |
| 29412 | Charleston | 40,307 |
| 29407 | Charleston | 35,908 |
| 29456 | Ladson | 35,871 |
| 29406 | Charleston | 32,570 |
| 29405 | North Charleston | 27,449 |
| 29455 | Johns Island | 25,449 |
| 29418 | North Charleston | 24,386 |
| 29403 | Charleston | 22,363 |
| 29401 | Charleston | 8,895 |
| 29449 | Hollywood | 7,598 |
| 29470 | Ravenel | 5,349 |
| 29429 | Awendaw | 4,527 |
| 29451 | Isle Of Palms | 4,378 |
| 29438 | Edisto Island | 2,751 |
| 29409 | Charleston | 2,612 |
| 29482 | Sullivans Island | 2,317 |
| 29458 | McClellanville | 2,303 |
| 29487 | Wadmalaw Island | 2,302 |
| 29404 | Charleston Afb | 2,257 |
| 29426 | Adams Run | 1,771 |
| 29424 | Charleston | 1,267 |
| 29439 | Folly Beach | 855 |
| 29425 | Charleston | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 26 ZCTAs in Charleston County, South Carolina (US Census).