ZIP Code 57750

57750 is one of South Dakota's ZIP codes, delivering to addresses in Interior, Jackson County.

City: Interior
County: Jackson County
State: South Dakota
Prefix: 577xx

Where this code sits

57750 is part of the 577xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Interior.

Interior South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57750 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57750

The ZIP codes whose reference points sit closest to 57750.
ZIP code	Distance	Delivers to
ZIP code 57577	17 mi	Wanblee, SD
ZIP code 57790	22 mi	Wall, SD
ZIP code 57543	22 mi	Kadoka, SD
ZIP code 57752	24 mi	Kyle, SD
ZIP code 57775	26 mi	Quinn, SD
ZIP code 57567	26 mi	Philip, SD
ZIP code 57714	31 mi	Allen, SD
ZIP code 57547	32 mi	Long Valley, 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 57750, plotted from its record coordinates.

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

Scope ZIP code 57750. 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.