ZIP Code 50643

50643 is one of Iowa's ZIP codes, delivering to addresses in Hudson, Black Hawk County.

City: Hudson
County: Black Hawk County
State: Iowa
Prefix: 506xx

Where this code sits

50643 is part of the 506xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hudson.

Hudson Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 50643 delivers to without sharing its boundary.

319 Area code 319

ZIP codes nearest 50643

The ZIP codes whose reference points sit closest to 50643.
ZIP code	Distance	Delivers to
ZIP code 50701	7.5 mi	Waterloo, IA
ZIP code 50702	8.3 mi	Waterloo, IA
ZIP code 50669	8.9 mi	Reinbeck, IA
ZIP code 50614	9.2 mi	Cedar Falls, IA
ZIP code 50704	9.2 mi	Waterloo, IA
ZIP code 50613	9.2 mi	Cedar Falls, IA
ZIP code 50612	9.6 mi	Buckingham, IA
ZIP code 50624	9.8 mi	Dike, 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 50643, plotted from its record coordinates.

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

Scope ZIP code 50643. 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.