ZIP Code 50657

50657 is one of Iowa's ZIP codes, delivering to addresses in Morrison, Grundy County.

City: Morrison
County: Grundy County
State: Iowa
Prefix: 506xx

Where this code sits

50657 is part of the 506xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Morrison.

Morrison Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 50657 delivers to without sharing its boundary.

319 Area code 319

ZIP codes nearest 50657

The ZIP codes whose reference points sit closest to 50657.
ZIP code	Distance	Delivers to
ZIP code 50669	4.5 mi	Reinbeck, IA
ZIP code 50638	5.5 mi	Grundy Center, IA
ZIP code 50652	5.5 mi	Lincoln, IA
ZIP code 50642	7.6 mi	Holland, IA
ZIP code 50624	9.5 mi	Dike, IA
ZIP code 50609	10 mi	Beaman, IA
ZIP code 50643	12 mi	Hudson, IA
ZIP code 50635	12 mi	Gladbrook, 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 50657, plotted from its record coordinates.

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

Scope ZIP code 50657. 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.