ZIP Code 73550

73550 is one of Oklahoma's ZIP codes, delivering to addresses in Hollis, Harmon County.

City: Hollis
County: Harmon County
State: Oklahoma
Prefix: 735xx

Where this code sits

73550 is part of the 735xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hollis.

Hollis Oklahoma ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 73550 delivers to without sharing its boundary.

580 Area code 580

ZIP codes nearest 73550

The ZIP codes whose reference points sit closest to 73550.
ZIP code	Distance	Delivers to
ZIP code 73544	7.9 mi	Gould, OK
ZIP code 79230	7.9 mi	Dodson, TX
ZIP code 73571	15 mi	Vinson, OK
ZIP code 79095	21 mi	Wellington, TX
ZIP code 73532	21 mi	Duke, OK
ZIP code 73537	22 mi	Eldorado, OK
ZIP code 79201	27 mi	Childress, TX
ZIP code 73523	28 mi	Altus Afb, 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 73550, plotted from its record coordinates.

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

Scope ZIP code 73550. 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.