ZIP Code 57722

57722 is one of South Dakota's ZIP codes, delivering to addresses in Buffalo Gap, Custer County.

City: Buffalo Gap
County: Custer County
State: South Dakota
Prefix: 577xx

Where this code sits

57722 is part of the 577xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Buffalo Gap.

Buffalo Gap South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57722 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57722

The ZIP codes whose reference points sit closest to 57722.
ZIP code	Distance	Delivers to
ZIP code 57747	9.5 mi	Hot Springs, SD
ZIP code 57766	10 mi	Oral, SD
ZIP code 57730	12 mi	Custer, SD
ZIP code 57738	13 mi	Fairburn, SD
ZIP code 57782	14 mi	Smithwick, SD
ZIP code 57773	16 mi	Pringle, SD
ZIP code 57744	23 mi	Hermosa, SD
ZIP code 57763	24 mi	Oelrichs, 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 57722, plotted from its record coordinates.

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

Scope ZIP code 57722. 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.