ZIP Code 57770

57770 is one of South Dakota's ZIP codes, delivering to addresses in Pine Ridge, Oglala Lakota County.

City: Pine Ridge
County: Oglala Lakota County
State: South Dakota
Prefix: 577xx

Where this code sits

57770 is part of the 577xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Pine Ridge.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57770 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57770

The ZIP codes whose reference points sit closest to 57770.
ZIP code	Distance	Delivers to
ZIP code 69365	8.3 mi	Whiteclay, NE
ZIP code 57764	8.9 mi	Oglala, SD
ZIP code 57756	11 mi	Manderson, SD
ZIP code 57794	12 mi	Wounded Knee, SD
ZIP code 57772	16 mi	Porcupine, SD
ZIP code 57716	20 mi	Batesland, SD
ZIP code 69360	27 mi	Rushville, NE
ZIP code 69337	29 mi	Chadron, NE

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 57770, plotted from its record coordinates.

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

Scope ZIP code 57770. 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.