ZIP Code 57330

57330 is one of South Dakota's ZIP codes, delivering to addresses in Delmont, Douglas County.

City: Delmont
County: Douglas County
State: South Dakota
Prefix: 573xx

Where this code sits

57330 is part of the 573xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Delmont.

Delmont South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57330 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57330

The ZIP codes whose reference points sit closest to 57330.
ZIP code	Distance	Delivers to
ZIP code 57376	9.5 mi	Tripp, SD
ZIP code 57313	10 mi	Armour, SD
ZIP code 57380	14 mi	Wagner, SD
ZIP code 57366	14 mi	Parkston, SD
ZIP code 57328	15 mi	Corsica, SD
ZIP code 57315	16 mi	Avon, SD
ZIP code 57331	17 mi	Dimock, SD
ZIP code 57329	18 mi	Dante, 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 57330, plotted from its record coordinates.

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

Scope ZIP code 57330. 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.