ZIP Code 66944

66944 is one of Kansas's ZIP codes, delivering to addresses in Haddam, Washington County.

City: Haddam
County: Washington County
State: Kansas
Prefix: 669xx

Where this code sits

66944 is part of the 669xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Haddam.

Haddam Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66944 delivers to without sharing its boundary.

785 Area code 785

ZIP codes nearest 66944

The ZIP codes whose reference points sit closest to 66944.
ZIP code	Distance	Delivers to
ZIP code 66958	6.7 mi	Morrowville, KS
ZIP code 66940	8.4 mi	Cuba, KS
ZIP code 66955	9.4 mi	Mahaska, KS
ZIP code 66960	9.6 mi	Narka, KS
ZIP code 66930	13 mi	Agenda, KS
ZIP code 66959	13 mi	Munden, KS
ZIP code 66968	14 mi	Washington, KS
ZIP code 68429	15 mi	Reynolds, NE

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 66944, plotted from its record coordinates.

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

Scope ZIP code 66944. 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.