ZIP Code 57761

57761 is one of South Dakota's ZIP codes, delivering to addresses in New Underwood, Pennington County.

City: New Underwood
County: Pennington County
State: South Dakota
Prefix: 577xx

Where this code sits

57761 is part of the 577xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to New Underwood.

New Underwood South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57761 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57761

The ZIP codes whose reference points sit closest to 57761.
ZIP code	Distance	Delivers to
ZIP code 57725	9.7 mi	Caputa, SD
ZIP code 57767	13 mi	Owanka, SD
ZIP code 57719	13 mi	Box Elder, SD
ZIP code 57706	14 mi	Ellsworth Afb, SD
ZIP code 57703	18 mi	Rapid City, SD
ZIP code 57701	20 mi	Rapid City, SD
ZIP code 57791	21 mi	Wasta, SD
ZIP code 57780	24 mi	Scenic, 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 57761, plotted from its record coordinates.

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

Scope ZIP code 57761. 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.