ZIP Code 66401

66401 is one of Kansas's ZIP codes, delivering to addresses in Alma, Wabaunsee County.

City: Alma
County: Wabaunsee County
State: Kansas
Prefix: 664xx

Where this code sits

66401 is part of the 664xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Alma.

Alma Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66401 delivers to without sharing its boundary.

785 Area code 785

ZIP codes nearest 66401

The ZIP codes whose reference points sit closest to 66401.
ZIP code	Distance	Delivers to
ZIP code 66501	4.2 mi	Mc Farland, KS
ZIP code 66526	7.7 mi	Paxico, KS
ZIP code 66507	14 mi	Maple Hill, KS
ZIP code 66547	14 mi	Wamego, KS
ZIP code 66834	14 mi	Alta Vista, KS
ZIP code 66423	15 mi	Eskridge, KS
ZIP code 66535	16 mi	Saint George, KS
ZIP code 66407	16 mi	Belvue, 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 66401, plotted from its record coordinates.

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

Scope ZIP code 66401. 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.