ZIP Code 51503

51503 is one of Iowa's ZIP codes, delivering to addresses in Council Bluffs, Pottawattamie County.

City: Council Bluffs
County: Pottawattamie County
State: Iowa
Prefix: 515xx

Where this code sits

51503 is part of the 515xx range, the group of codes handled by one mail processing centre. Council Bluffs is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Council Bluffs page.

Council Bluffs Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 51503 delivers to without sharing its boundary.

712 Area code 712

ZIP codes nearest 51503

The ZIP codes whose reference points sit closest to 51503.
ZIP code	Distance	Delivers to
ZIP code 51502	1.9 mi	Council Bluffs, IA
ZIP code 51501	3.3 mi	Council Bluffs, IA
ZIP code 51510	5.1 mi	Carter Lake, IA
ZIP code 68101	5.9 mi	Omaha, NE
ZIP code 68103	5.9 mi	Omaha, NE
ZIP code 68109	5.9 mi	Omaha, NE
ZIP code 68119	5.9 mi	Omaha, NE
ZIP code 68120	5.9 mi	Omaha, 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 51503, plotted from its record coordinates.

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

Scope ZIP code 51503. 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.