ZIP Code 29321

29321 is one of South Carolina's ZIP codes, delivering to addresses in Buffalo, Union County.

City: Buffalo
County: Union County
State: South Carolina
Prefix: 293xx

Where this code sits

29321 is part of the 293xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Buffalo.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 29321 delivers to without sharing its boundary.

ZIP codes nearest 29321

The ZIP codes whose reference points sit closest to 29321.
ZIP code	Distance	Delivers to
ZIP code 29379	3.5 mi	Union, SC
ZIP code 29353	6.5 mi	Jonesville, SC
ZIP code 29395	8.7 mi	Jonesville, SC
ZIP code 29374	10 mi	Pauline, SC
ZIP code 29331	12 mi	Cross Anchor, SC
ZIP code 29372	13 mi	Pacolet, SC
ZIP code 29364	13 mi	Lockhart, SC
ZIP code 29373	14 mi	Pacolet Mills, 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 29321, plotted from its record coordinates.

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

Scope ZIP code 29321. 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.