ZIP Code 57028

57028 is one of South Dakota's ZIP codes, delivering to addresses in Flandreau, Moody County.

City: Flandreau
County: Moody County
State: South Dakota
Prefix: 570xx

Where this code sits

57028 is part of the 570xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Flandreau.

Flandreau South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57028 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57028

The ZIP codes whose reference points sit closest to 57028.
ZIP code	Distance	Delivers to
ZIP code 57024	5.6 mi	Egan, SD
ZIP code 57065	12 mi	Trent, SD
ZIP code 57017	12 mi	Colman, SD
ZIP code 57026	13 mi	Elkton, SD
ZIP code 57002	16 mi	Aurora, SD
ZIP code 57057	16 mi	Rutland, SD
ZIP code 56140	17 mi	Ihlen, MN
ZIP code 57022	18 mi	Dell Rapids, 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 57028, plotted from its record coordinates.

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

Scope ZIP code 57028. 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.