ZIP Code 73931

73931 is one of Oklahoma's ZIP codes, delivering to addresses in Balko, Beaver County.

City: Balko
County: Beaver County
State: Oklahoma
Prefix: 739xx

Where this code sits

73931 is part of the 739xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Balko.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 73931 delivers to without sharing its boundary.

580 Area code 580

ZIP codes nearest 73931

The ZIP codes whose reference points sit closest to 73931.
ZIP code	Distance	Delivers to
ZIP code 79005	15 mi	Booker, TX
ZIP code 79070	17 mi	Perryton, TX
ZIP code 73932	19 mi	Beaver, OK
ZIP code 73950	21 mi	Turpin, OK
ZIP code 73901	23 mi	Adams, OK
ZIP code 73938	23 mi	Forgan, OK
ZIP code 79024	24 mi	Darrouzett, TX
ZIP code 73944	25 mi	Hardesty, 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 73931, plotted from its record coordinates.

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

Scope ZIP code 73931. 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.