ZIP Code 57441

57441 is one of South Dakota's ZIP codes, delivering to addresses in Frederick, Brown County.

City: Frederick
County: Brown County
State: South Dakota
Prefix: 574xx

Where this code sits

57441 is part of the 574xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Frederick.

Frederick South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57441 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57441

The ZIP codes whose reference points sit closest to 57441.
ZIP code	Distance	Delivers to
ZIP code 57426	8.1 mi	Barnard, SD
ZIP code 58436	11 mi	Ellendale, ND
ZIP code 57481	13 mi	Westport, SD
ZIP code 57446	16 mi	Hecla, SD
ZIP code 57433	17 mi	Columbia, SD
ZIP code 58439	18 mi	Forbes, ND
ZIP code 57402	20 mi	Aberdeen, SD
ZIP code 57449	21 mi	Houghton, 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 57441, plotted from its record coordinates.

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

Scope ZIP code 57441. 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.