ZIP Code 57738

57738 is one of South Dakota's ZIP codes, delivering to addresses in Fairburn, Custer County.

City: Fairburn
County: Custer County
State: South Dakota
Prefix: 577xx

Where this code sits

57738 is part of the 577xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Fairburn.

Fairburn South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57738 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57738

The ZIP codes whose reference points sit closest to 57738.
ZIP code	Distance	Delivers to
ZIP code 57730	11 mi	Custer, SD
ZIP code 57744	11 mi	Hermosa, SD
ZIP code 57722	13 mi	Buffalo Gap, SD
ZIP code 57751	18 mi	Keystone, SD
ZIP code 57766	19 mi	Oral, SD
ZIP code 57773	19 mi	Pringle, SD
ZIP code 57747	21 mi	Hot Springs, SD
ZIP code 57702	25 mi	Rapid City, SD

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 57738, plotted from its record coordinates.

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

Scope ZIP code 57738. 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.