Sullivans Island South Carolina ZIP Codes

Sullivans Island holds a single ZIP code.

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Sullivans Island codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Sullivans Island. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

Every Sullivans Island ZIP code begins 294. Those first three digits identify the sectional center facility that processes mail for this part of South Carolina. Statewide that range covers 72 ZIP codes, so Sullivans Island accounts for 1% of it.

Every South Carolina ZIP prefix and the region it covers →

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Sullivans Island occupies.

• 843 Area code 843
• 854 Area code 854

Sullivans Island South Carolina area codes in full →

Straight-line distance between place reference points, not driving distance.