ZIP Code 57366

57366 is one of South Dakota's ZIP codes, delivering to addresses in Parkston, Hutchinson County.

City: Parkston
County: Hutchinson County
State: South Dakota
Prefix: 573xx

Where this code sits

57366 is part of the 573xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Parkston.

Parkston South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57366 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57366

The ZIP codes whose reference points sit closest to 57366.
ZIP code	Distance	Delivers to
ZIP code 57331	5.3 mi	Dimock, SD
ZIP code 57334	10 mi	Ethan, SD
ZIP code 57376	11 mi	Tripp, SD
ZIP code 57354	12 mi	Kaylor, SD
ZIP code 57330	14 mi	Delmont, SD
ZIP code 57052	15 mi	Olivet, SD
ZIP code 57328	20 mi	Corsica, SD
ZIP code 57313	20 mi	Armour, 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 57366, plotted from its record coordinates.

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

Scope ZIP code 57366. 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.