ZIP Code 73437

73437 is one of Oklahoma's ZIP codes, delivering to addresses in Graham, Carter County.

City: Graham
County: Carter County
State: Oklahoma
Prefix: 734xx

Where this code sits

73437 is part of the 734xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Graham.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 73437 delivers to without sharing its boundary.

580 Area code 580

ZIP codes nearest 73437

The ZIP codes whose reference points sit closest to 73437.
ZIP code	Distance	Delivers to
ZIP code 73435	4.3 mi	Fox, OK
ZIP code 73481	6.9 mi	Ratliff City, OK
ZIP code 73444	7.0 mi	Hennepin, OK
ZIP code 73487	7.2 mi	Tatums, OK
ZIP code 73425	9.3 mi	Countyline, OK
ZIP code 73488	10 mi	Tussy, OK
ZIP code 73438	11 mi	Healdton, OK
ZIP code 73402	12 mi	Ardmore, 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 73437, plotted from its record coordinates.

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

Scope ZIP code 73437. 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.