ZIP Code 57368

57368 is one of South Dakota's ZIP codes, delivering to addresses in Plankinton, Aurora County.

City: Plankinton
County: Aurora County
State: South Dakota
Prefix: 573xx

Where this code sits

57368 is part of the 573xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Plankinton.

Plankinton South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57368 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57368

The ZIP codes whose reference points sit closest to 57368.
ZIP code	Distance	Delivers to
ZIP code 57363	10 mi	Mount Vernon, SD
ZIP code 57375	11 mi	Stickney, SD
ZIP code 57383	12 mi	White Lake, SD
ZIP code 57359	18 mi	Letcher, SD
ZIP code 57344	21 mi	Harrison, SD
ZIP code 57301	22 mi	Mitchell, SD
ZIP code 57364	22 mi	New Holland, SD
ZIP code 57328	23 mi	Corsica, 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 57368, plotted from its record coordinates.

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

Scope ZIP code 57368. 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.