ZIP Code 51440

51440 is one of Iowa's ZIP codes, delivering to addresses in Dedham, Carroll County.

City: Dedham
County: Carroll County
State: Iowa
Prefix: 514xx

Where this code sits

51440 is part of the 514xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Dedham.

Dedham Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 51440 delivers to without sharing its boundary.

712 Area code 712

ZIP codes nearest 51440

The ZIP codes whose reference points sit closest to 51440.
ZIP code	Distance	Delivers to
ZIP code 51463	6.0 mi	Templeton, IA
ZIP code 50058	7.0 mi	Coon Rapids, IA
ZIP code 50110	9.7 mi	Gray, IA
ZIP code 51444	11 mi	Halbur, IA
ZIP code 51401	12 mi	Carroll, IA
ZIP code 51443	12 mi	Glidden, IA
ZIP code 51455	12 mi	Manning, IA
ZIP code 50025	13 mi	Audubon, 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 51440, plotted from its record coordinates.

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

Scope ZIP code 51440. 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.