ZIP Code 57051

57051 is one of South Dakota's ZIP codes, delivering to addresses in Oldham, Kingsbury County.

City: Oldham
County: Kingsbury County
State: South Dakota
Prefix: 570xx

Where this code sits

57051 is part of the 570xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Oldham.

Oldham South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57051 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57051

The ZIP codes whose reference points sit closest to 57051.
ZIP code	Distance	Delivers to
ZIP code 57054	8.7 mi	Ramona, SD
ZIP code 57249	10 mi	Lake Preston, SD
ZIP code 57061	11 mi	Sinai, SD
ZIP code 57212	13 mi	Arlington, SD
ZIP code 57050	15 mi	Nunda, SD
ZIP code 57214	17 mi	Badger, SD
ZIP code 57231	17 mi	De Smet, SD
ZIP code 57076	18 mi	Winfred, 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 57051, plotted from its record coordinates.

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

Scope ZIP code 57051. 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.