ZIP Code 73628

73628 is one of Oklahoma's ZIP codes, delivering to addresses in Cheyenne, Roger Mills County.

City: Cheyenne
County: Roger Mills County
State: Oklahoma
Prefix: 736xx

Where this code sits

73628 is part of the 736xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Cheyenne.

Cheyenne Oklahoma ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 73628 delivers to without sharing its boundary.

580 Area code 580

ZIP codes nearest 73628

The ZIP codes whose reference points sit closest to 73628.
ZIP code	Distance	Delivers to
ZIP code 73660	14 mi	Reydon, OK
ZIP code 73650	15 mi	Hammon, OK
ZIP code 73666	17 mi	Sweetwater, OK
ZIP code 73638	18 mi	Crawford, OK
ZIP code 73644	20 mi	Elk City, OK
ZIP code 73648	20 mi	Elk City, OK
ZIP code 73642	21 mi	Durham, OK
ZIP code 73662	21 mi	Sayre, OK

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 73628, plotted from its record coordinates.

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

Scope ZIP code 73628. 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.