ZIP Code 78592

78592 is one of Texas's ZIP codes, delivering to addresses in Santa Maria, Cameron County.

City: Santa Maria
County: Cameron County
State: Texas
Prefix: 785xx

Where this code sits

78592 is part of the 785xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Santa Maria.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78592 delivers to without sharing its boundary.

956 Area code 956

ZIP codes nearest 78592

The ZIP codes whose reference points sit closest to 78592.
ZIP code	Distance	Delivers to
ZIP code 78559	6.2 mi	La Feria, TX
ZIP code 78579	6.5 mi	Progreso, TX
ZIP code 78570	6.6 mi	Mercedes, TX
ZIP code 78567	6.8 mi	Los Indios, TX
ZIP code 78552	9.6 mi	Harlingen, TX
ZIP code 78599	10 mi	Weslaco, TX
ZIP code 78596	11 mi	Weslaco, TX
ZIP code 78553	12 mi	Harlingen, 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 78592, plotted from its record coordinates.

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

Scope ZIP code 78592. 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.