ZIP Code 57639

57639 is one of South Dakota's ZIP codes, delivering to addresses in Little Eagle, Corson County.

City: Little Eagle
County: Corson County
State: South Dakota
Prefix: 576xx

Where this code sits

57639 is part of the 576xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Little Eagle.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57639 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57639

The ZIP codes whose reference points sit closest to 57639.
ZIP code	Distance	Delivers to
ZIP code 57658	13 mi	Wakpala, SD
ZIP code 57642	15 mi	Mc Laughlin, SD
ZIP code 57657	15 mi	Trail City, SD
ZIP code 57621	15 mi	Bullhead, SD
ZIP code 57630	17 mi	Glencross, SD
ZIP code 57641	17 mi	Mc Intosh, SD
ZIP code 57601	20 mi	Mobridge, SD
ZIP code 57659	21 mi	Walker, 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 57639, plotted from its record coordinates.

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

Scope ZIP code 57639. 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.