ZIP Code 66780

66780 is one of Kansas's ZIP codes, delivering to addresses in Walnut, Crawford County.

City: Walnut
County: Crawford County
State: Kansas
Prefix: 667xx

Where this code sits

66780 is part of the 667xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Walnut.

Walnut Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66780 delivers to without sharing its boundary.

620 Area code 620

ZIP codes nearest 66780

The ZIP codes whose reference points sit closest to 66780.
ZIP code	Distance	Delivers to
ZIP code 66746	5.2 mi	Hepler, KS
ZIP code 66775	7.8 mi	Stark, KS
ZIP code 66771	8.7 mi	Saint Paul, KS
ZIP code 66734	11 mi	Farlington, KS
ZIP code 66733	11 mi	Erie, KS
ZIP code 66743	12 mi	Girard, KS
ZIP code 66772	12 mi	Savonburg, KS
ZIP code 66732	16 mi	Elsmore, 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 66780, plotted from its record coordinates.

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

Scope ZIP code 66780. 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.