ZIP Code 29812

29812 is one of South Carolina's ZIP codes, delivering to addresses in Barnwell, Barnwell County.

City: Barnwell
County: Barnwell County
State: South Carolina
Prefix: 298xx

Where this code sits

29812 is part of the 298xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Barnwell.

Barnwell South Carolina ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 29812 delivers to without sharing its boundary.

ZIP codes nearest 29812

The ZIP codes whose reference points sit closest to 29812.
ZIP code	Distance	Delivers to
ZIP code 29813	6.7 mi	Hilda, SC
ZIP code 29817	10 mi	Blackville, SC
ZIP code 29826	10 mi	Elko, SC
ZIP code 29843	11 mi	Olar, SC
ZIP code 29853	12 mi	Williston, SC
ZIP code 29836	12 mi	Martin, SC
ZIP code 29849	13 mi	Ulmer, SC
ZIP code 29042	14 mi	Denmark, SC

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

Each point is the reference point for 29812, plotted from its record coordinates.

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

Scope ZIP code 29812. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.