ZIP Code 57571

57571 is one of South Dakota's ZIP codes, delivering to addresses in Saint Charles, Gregory County.

City: Saint Charles
County: Gregory County
State: South Dakota
Prefix: 575xx

Where this code sits

57571 is part of the 575xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Saint Charles.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57571 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57571

The ZIP codes whose reference points sit closest to 57571.
ZIP code	Distance	Delivers to
ZIP code 57317	5.4 mi	Bonesteel, SD
ZIP code 57538	6.4 mi	Herrick, SD
ZIP code 68755	9.3 mi	Naper, NE
ZIP code 57523	12 mi	Burke, SD
ZIP code 57335	14 mi	Fairfax, SD
ZIP code 57533	16 mi	Gregory, SD
ZIP code 68722	17 mi	Butte, NE
ZIP code 68753	21 mi	Mills, NE

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 57571, plotted from its record coordinates.

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

Scope ZIP code 57571. 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.