ZIP Code 52591

52591 is one of Iowa's ZIP codes, delivering to addresses in Sigourney, Keokuk County.

City: Sigourney
County: Keokuk County
State: Iowa
Prefix: 525xx

Where this code sits

52591 is part of the 525xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sigourney.

Sigourney Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 52591 delivers to without sharing its boundary.

641 Area code 641

ZIP codes nearest 52591

The ZIP codes whose reference points sit closest to 52591.
ZIP code	Distance	Delivers to
ZIP code 52562	1.3 mi	Hayesville, IA
ZIP code 52550	7.0 mi	Delta, IA
ZIP code 52355	7.5 mi	Webster, IA
ZIP code 52231	9.0 mi	Harper, IA
ZIP code 50268	9.1 mi	What Cheer, IA
ZIP code 50136	9.3 mi	Keswick, IA
ZIP code 52576	9.6 mi	Ollie, IA
ZIP code 52568	10 mi	Martinsburg, 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 52591, plotted from its record coordinates.

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

Scope ZIP code 52591. 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.