ZIP Code 50120

50120 is one of Iowa's ZIP codes, delivering to addresses in Haverhill, Marshall County.

City: Haverhill
County: Marshall County
State: Iowa
Prefix: 501xx

Where this code sits

50120 is part of the 501xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Haverhill.

Haverhill Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 50120 delivers to without sharing its boundary.

641 Area code 641

ZIP codes nearest 50120

The ZIP codes whose reference points sit closest to 50120.
ZIP code	Distance	Delivers to
ZIP code 50141	4.6 mi	Laurel, IA
ZIP code 50162	5.3 mi	Melbourne, IA
ZIP code 50078	6.1 mi	Ferguson, IA
ZIP code 50158	8.2 mi	Marshalltown, IA
ZIP code 50106	9.2 mi	Gilman, IA
ZIP code 50234	10 mi	Rhodes, IA
ZIP code 50247	11 mi	State Center, IA
ZIP code 50142	12 mi	Le Grand, 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 50120, plotted from its record coordinates.

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

Scope ZIP code 50120. 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.