26 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 29464 | Mount Pleasant | 51,758 |
| 29466 | Mount Pleasant | 44,387 |
| 29414 | Charleston | 43,717 |
| 29412 | Charleston | 40,495 |
| 29456 | Ladson | 39,280 |
| 29407 | Charleston | 36,640 |
| 29406 | Charleston | 32,482 |
| 29405 | North Charleston | 26,717 |
| 29455 | Johns Island | 26,308 |
| 29418 | North Charleston | 25,589 |
| 29403 | Charleston | 22,319 |
| 29401 | Charleston | 9,210 |
| 29449 | Hollywood | 7,761 |
| 29470 | Ravenel | 5,869 |
| 29451 | Isle Of Palms | 4,382 |
| 29429 | Awendaw | 4,366 |
| 29487 | Wadmalaw Island | 2,702 |
| 29438 | Edisto Island | 2,659 |
| 29458 | McClellanville | 2,354 |
| 29409 | Charleston | 2,328 |
| 29404 | Charleston Afb | 2,217 |
| 29482 | Sullivans Island | 2,127 |
| 29426 | Adams Run | 1,640 |
| 29424 | Charleston | 1,219 |
| 29439 | Folly Beach | 869 |
| 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).