ZIP Code 79721

79721 is one of Texas's ZIP codes, delivering to addresses in Big Spring, Howard County.

City: Big Spring
County: Howard County
State: Texas
Prefix: 797xx

Where this code sits

79721 is part of the 797xx range, the group of codes handled by one mail processing centre. Big Spring is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Big Spring page.

Big Spring Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 79721 delivers to without sharing its boundary.

432 Area code 432

ZIP codes nearest 79721

The ZIP codes whose reference points sit closest to 79721.
ZIP code	Distance	Delivers to
ZIP code 79511	3.5 mi	Coahoma, TX
ZIP code 79720	4.9 mi	Big Spring, TX
ZIP code 79733	11 mi	Forsan, TX
ZIP code 79748	19 mi	Knott, TX
ZIP code 79565	20 mi	Westbrook, TX
ZIP code 79713	27 mi	Ackerly, TX
ZIP code 79782	27 mi	Stanton, TX
ZIP code 79749	29 mi	Lenorah, TX

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 79721, plotted from its record coordinates.

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

Scope ZIP code 79721. 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.