ZIP Code 52157

52157 is one of Iowa's ZIP codes, delivering to addresses in Mc Gregor, Clayton County.

City: Mc Gregor
County: Clayton County
State: Iowa
Prefix: 521xx

Where this code sits

52157 is part of the 521xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mc Gregor.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 52157 delivers to without sharing its boundary.

563 Area code 563

ZIP codes nearest 52157

The ZIP codes whose reference points sit closest to 52157.
ZIP code	Distance	Delivers to
ZIP code 52158	0.9 mi	Marquette, IA
ZIP code 53821	3.7 mi	Prairie Du Chien, WI
ZIP code 52047	9.1 mi	Farmersburg, IA
ZIP code 53801	9.4 mi	Bagley, WI
ZIP code 52146	10 mi	Harpers Ferry, IA
ZIP code 52049	10 mi	Garnavillo, IA
ZIP code 52159	10 mi	Monona, IA
ZIP code 52072	12 mi	Saint Olaf, IA

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 52157, plotted from its record coordinates.

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

Scope ZIP code 52157. 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.