Barnwell South Carolina ZIP Codes
Barnwell holds a single ZIP code.
Every ZIP code in Barnwell
| ZIP code | County |
|---|---|
| 29812 | Barnwell 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Barnwell codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Barnwell. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Barnwell ZIP code begins 298. Those first three digits identify the sectional center facility that processes mail for this part of South Carolina. Statewide that range covers 44 ZIP codes, so Barnwell accounts for 2% of it.
Every South Carolina ZIP prefix and the region it covers →
Area codes covering Barnwell
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 Barnwell occupies.
Barnwell South Carolina area codes in full →
Where Barnwell's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Barnwell
| City | Distance | ZIP codes |
|---|---|---|
| Hilda South Carolina ZIP codes | 7.5 mi | 1 ZIP code |
| Blackville South Carolina ZIP codes | 8.4 mi | 1 ZIP code |
| Elko South Carolina ZIP codes | 9.6 mi | 1 ZIP code |
| Olar South Carolina ZIP codes | 11 mi | 1 ZIP code |
| Williston South Carolina ZIP codes | 12 mi | 1 ZIP code |
| Ulmer South Carolina ZIP codes | 13 mi | 1 ZIP code |
| Denmark South Carolina ZIP codes | 14 mi | 1 ZIP code |
| Allendale South Carolina ZIP codes | 17 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.