ZIP Code 73639

73639 is one of Oklahoma's ZIP codes, delivering to addresses in Custer City, Custer County.

City: Custer City
County: Custer County
State: Oklahoma
Prefix: 736xx

Where this code sits

73639 is part of the 736xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Custer City.

Custer City Oklahoma ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 73639 delivers to without sharing its boundary.

580 Area code 580

ZIP codes nearest 73639

The ZIP codes whose reference points sit closest to 73639.
ZIP code	Distance	Delivers to
ZIP code 73620	8.1 mi	Arapaho, OK
ZIP code 73669	10 mi	Thomas, OK
ZIP code 73659	12 mi	Putnam, OK
ZIP code 73601	13 mi	Clinton, OK
ZIP code 73096	16 mi	Weatherford, OK
ZIP code 73646	17 mi	Fay, OK
ZIP code 73625	19 mi	Butler, OK
ZIP code 73658	20 mi	Oakwood, 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 73639, plotted from its record coordinates.

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

Scope ZIP code 73639. 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.