Dorchester South Carolina ZIP Codes

Dorchester holds a single ZIP code.

Every ZIP code in Dorchester

The complete list of Dorchester, South Carolina ZIP codes with the county each falls in.
ZIP code	County
29437	Dorchester County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Scope every ZIP code recorded for Dorchester. 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.

How these codes cluster

Every Dorchester 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 Dorchester accounts for 1% of it.

Every South Carolina ZIP prefix and the region it covers →

Area codes covering Dorchester

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 Dorchester occupies.

Dorchester South Carolina area codes in full →

Where Dorchester's ZIP codes sit

Each point is one Dorchester ZIP code, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Cities near Dorchester

The closest places to Dorchester with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Ridgeville South Carolina ZIP codes	6.1 mi	1 ZIP code
Harleyville South Carolina ZIP codes	6.6 mi	1 ZIP code
Cottageville South Carolina ZIP codes	14 mi	1 ZIP code
Holly Hill South Carolina ZIP codes	14 mi	1 ZIP code
Reevesville South Carolina ZIP codes	15 mi	1 ZIP code
Summerville South Carolina ZIP codes	15 mi	4 ZIP codes
Eutawville South Carolina ZIP codes	19 mi	1 ZIP code
Vance South Carolina ZIP codes	22 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.