Dorchester County ZIP Codes
Dorchester County is a county of South Carolina.
- ZIP codes
- 10
- Cities & towns
- 8
- Area codes
- 2
- Land area
- 568 sq mi
Every ZIP code in Dorchester County
| ZIP code | City |
|---|---|
| 29420 | North Charleston |
| 29437 | Dorchester |
| 29447 | Grover |
| 29448 | Harleyville |
| 29471 | Reevesville |
| 29472 | Ridgeville |
| 29477 | Saint George |
| 29483 | Summerville |
| 29484 | Summerville |
| 29485 | Summerville |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Dorchester County codes above are listed without a column we would have to invent.
Cities and towns in Dorchester County
A further 2 places in Dorchester County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Dorchester County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
Where Dorchester County's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Dorchester County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.