ZIP Code 51576

51576 is one of Iowa's ZIP codes, delivering to addresses in Underwood, Pottawattamie County.

City: Underwood
County: Pottawattamie County
State: Iowa
Prefix: 515xx

Where this code sits

51576 is part of the 515xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Underwood.

Underwood Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 51576 delivers to without sharing its boundary.

712 Area code 712

ZIP codes nearest 51576

The ZIP codes whose reference points sit closest to 51576.
ZIP code	Distance	Delivers to
ZIP code 51548	5.4 mi	Mc Clelland, IA
ZIP code 51559	7.2 mi	Neola, IA
ZIP code 51553	8.2 mi	Minden, IA
ZIP code 51575	9.0 mi	Treynor, IA
ZIP code 51526	10 mi	Crescent, IA
ZIP code 51503	12 mi	Council Bluffs, IA
ZIP code 51560	13 mi	Oakland, IA
ZIP code 51525	14 mi	Carson, 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 51576, plotted from its record coordinates.

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

Scope ZIP code 51576. 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.