ZIP Code 50158

50158 is one of Iowa's ZIP codes, delivering to addresses in Marshalltown, Marshall County.

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

Where this code sits

50158 is part of the 501xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Marshalltown.

Marshalltown Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 50158 delivers to without sharing its boundary.

ZIP codes nearest 50158

The ZIP codes whose reference points sit closest to 50158.
ZIP code	Distance	Delivers to
ZIP code 50005	6.4 mi	Albion, IA
ZIP code 50142	7.4 mi	Le Grand, IA
ZIP code 50078	7.5 mi	Ferguson, IA
ZIP code 50120	8.2 mi	Haverhill, IA
ZIP code 50148	11 mi	Liscomb, IA
ZIP code 50141	11 mi	Laurel, IA
ZIP code 50106	11 mi	Gilman, IA
ZIP code 50162	12 mi	Melbourne, 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 50158, plotted from its record coordinates.

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

Scope ZIP code 50158. 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.