ZIP Code 51301

51301 is one of Iowa's ZIP codes, delivering to addresses in Spencer, Clay County.

City: Spencer
County: Clay County
State: Iowa
Prefix: 513xx

Where this code sits

51301 is part of the 513xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Spencer.

Spencer Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 51301 delivers to without sharing its boundary.

712 Area code 712

ZIP codes nearest 51301

The ZIP codes whose reference points sit closest to 51301.
ZIP code	Distance	Delivers to
ZIP code 51340	4.3 mi	Fostoria, IA
ZIP code 51333	8.1 mi	Dickens, IA
ZIP code 51343	8.9 mi	Greenville, IA
ZIP code 51338	9.0 mi	Everly, IA
ZIP code 51357	9.1 mi	Royal, IA
ZIP code 51341	10 mi	Gillett Grove, IA
ZIP code 51351	12 mi	Milford, IA
ZIP code 51358	13 mi	Ruthven, 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 51301, plotted from its record coordinates.

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

Scope ZIP code 51301. 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.