ZIP Code 66523

66523 is one of Kansas's ZIP codes, delivering to addresses in Osage City, Osage County.

City: Osage City
County: Osage County
State: Kansas
Prefix: 665xx

Where this code sits

66523 is part of the 665xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Osage City.

Osage City Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66523 delivers to without sharing its boundary.

785 Area code 785

ZIP codes nearest 66523

The ZIP codes whose reference points sit closest to 66523.
ZIP code	Distance	Delivers to
ZIP code 66451	8.1 mi	Lyndon, KS
ZIP code 66413	9.4 mi	Burlingame, KS
ZIP code 66868	11 mi	Reading, KS
ZIP code 66537	12 mi	Scranton, KS
ZIP code 66543	12 mi	Vassar, KS
ZIP code 66431	13 mi	Harveyville, KS
ZIP code 66510	14 mi	Melvern, KS
ZIP code 66856	15 mi	Lebo, 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 66523, plotted from its record coordinates.

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

Scope ZIP code 66523. 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.