ZIP Code 57783

57783 is one of South Dakota's ZIP codes, delivering to addresses in Spearfish, Lawrence County.

City: Spearfish
County: Lawrence County
State: South Dakota
Prefix: 577xx

Where this code sits

57783 is part of the 577xx range, the group of codes handled by one mail processing centre. Spearfish is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Spearfish page.

Spearfish South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57783 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57783

The ZIP codes whose reference points sit closest to 57783.
ZIP code	Distance	Delivers to
ZIP code 57799	0.3 mi	Spearfish, SD
ZIP code 57779	7.9 mi	Saint Onge, SD
ZIP code 57732	11 mi	Deadwood, SD
ZIP code 82712	11 mi	Beulah, WY
ZIP code 57793	12 mi	Whitewood, SD
ZIP code 57717	12 mi	Belle Fourche, SD
ZIP code 57754	16 mi	Lead, SD
ZIP code 57762	20 mi	Nisland, 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 57783, plotted from its record coordinates.

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

Scope ZIP code 57783. 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.