ZIP Code 57345

57345 is one of South Dakota's ZIP codes, delivering to addresses in Highmore, Hyde County.

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

Where this code sits

57345 is part of the 573xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Highmore.

Highmore South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57345 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57345

The ZIP codes whose reference points sit closest to 57345.
ZIP code	Distance	Delivers to
ZIP code 57540	7.0 mi	Holabird, SD
ZIP code 57371	11 mi	Ree Heights, SD
ZIP code 57536	14 mi	Harrold, SD
ZIP code 57346	20 mi	Stephan, SD
ZIP code 57362	23 mi	Miller, SD
ZIP code 57522	24 mi	Blunt, SD
ZIP code 57467	27 mi	Orient, SD
ZIP code 57373	29 mi	Saint Lawrence, 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 57345, plotted from its record coordinates.

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

Scope ZIP code 57345. 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.