ZIP Codes in North Charleston, SC
North Charleston uses 3 ZIP codes, all in Charleston, Dorchester Counties. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 3 North Charleston ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 29405 | standard | Charleston | 26,254 |
| 29418 | standard | Charleston | 26,052 |
| 29420 | standard | Dorchester | 23,959 |
Finding a ZIP+4 in North Charleston
Knowing which of these 3 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same North Charleston street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of North Charleston addresses and download it complete.