ZIP Code 73620

73620 is one of Oklahoma's ZIP codes, delivering to addresses in Arapaho, Custer County.

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

Where this code sits

73620 is part of the 736xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Arapaho.

Arapaho Oklahoma ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 73620 delivers to without sharing its boundary.

580 Area code 580

ZIP codes nearest 73620

The ZIP codes whose reference points sit closest to 73620.
ZIP code	Distance	Delivers to
ZIP code 73601	4.8 mi	Clinton, OK
ZIP code 73639	8.1 mi	Custer City, OK
ZIP code 73622	14 mi	Bessie, OK
ZIP code 73647	15 mi	Foss, OK
ZIP code 73096	15 mi	Weatherford, OK
ZIP code 73625	16 mi	Butler, OK
ZIP code 73669	17 mi	Thomas, OK
ZIP code 73024	17 mi	Corn, 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 73620, plotted from its record coordinates.

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

Scope ZIP code 73620. 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.