ZIP Code 57346

57346 is one of South Dakota's ZIP codes, delivering to addresses in Stephan, Hyde County.

City: Stephan
County: Hyde County
State: South Dakota
Prefix: 573xx

Where this code sits

57346 is part of the 573xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Stephan.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57346 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57346

The ZIP codes whose reference points sit closest to 57346.
ZIP code	Distance	Delivers to
ZIP code 57548	13 mi	Lower Brule, SD
ZIP code 57339	14 mi	Fort Thompson, SD
ZIP code 57345	20 mi	Highmore, SD
ZIP code 57540	20 mi	Holabird, SD
ZIP code 57341	23 mi	Gann Valley, SD
ZIP code 57536	24 mi	Harrold, SD
ZIP code 57371	24 mi	Ree Heights, SD
ZIP code 57569	27 mi	Reliance, 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 57346, plotted from its record coordinates.

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

Scope ZIP code 57346. 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.