ZIP Code 51439

51439 is one of Iowa's ZIP codes, delivering to addresses in Charter Oak, Crawford County.

City: Charter Oak
County: Crawford County
State: Iowa
Prefix: 514xx

Where this code sits

51439 is part of the 514xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Charter Oak.

Charter Oak Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 51439 delivers to without sharing its boundary.

712 Area code 712

ZIP codes nearest 51439

The ZIP codes whose reference points sit closest to 51439.
ZIP code	Distance	Delivers to
ZIP code 51460	4.3 mi	Ricketts, IA
ZIP code 51060	5.9 mi	Ute, IA
ZIP code 51461	10 mi	Schleswig, IA
ZIP code 51572	11 mi	Soldier, IA
ZIP code 51520	11 mi	Arion, IA
ZIP code 51034	12 mi	Mapleton, IA
ZIP code 51528	12 mi	Dow City, IA
ZIP code 51442	13 mi	Denison, 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 51439, plotted from its record coordinates.

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

Scope ZIP code 51439. 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.