ZIP Code 66434

66434 is one of Kansas's ZIP codes, delivering to addresses in Hiawatha, Brown County.

City: Hiawatha
County: Brown County
State: Kansas
Prefix: 664xx

Where this code sits

66434 is part of the 664xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hiawatha.

Hiawatha Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66434 delivers to without sharing its boundary.

785 Area code 785

ZIP codes nearest 66434

The ZIP codes whose reference points sit closest to 66434.
ZIP code	Distance	Delivers to
ZIP code 66527	6.5 mi	Powhattan, KS
ZIP code 66425	6.9 mi	Fairview, KS
ZIP code 66532	7.8 mi	Robinson, KS
ZIP code 66439	8.6 mi	Horton, KS
ZIP code 66515	12 mi	Morrill, KS
ZIP code 66424	12 mi	Everest, KS
ZIP code 66552	13 mi	Whiting, KS
ZIP code 66534	13 mi	Sabetha, KS

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 66434, plotted from its record coordinates.

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

Scope ZIP code 66434. 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.