ZIP Code 66056

66056 is one of Kansas's ZIP codes, delivering to addresses in Mound City, Linn County.

City: Mound City
County: Linn County
State: Kansas
Prefix: 660xx

Where this code sits

66056 is part of the 660xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mound City.

Mound City Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66056 delivers to without sharing its boundary.

ZIP codes nearest 66056

The ZIP codes whose reference points sit closest to 66056.
ZIP code	Distance	Delivers to
ZIP code 66075	6.4 mi	Pleasanton, KS
ZIP code 66767	8.7 mi	Prescott, KS
ZIP code 66754	9.7 mi	Mapleton, KS
ZIP code 66014	10 mi	Centerville, KS
ZIP code 66010	11 mi	Blue Mound, KS
ZIP code 66738	11 mi	Fulton, KS
ZIP code 64752	14 mi	Hume, MO
ZIP code 66072	15 mi	Parker, 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 66056, plotted from its record coordinates.

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

Scope ZIP code 66056. 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.