ZIP Code 78570

78570 is one of Texas's ZIP codes, delivering to addresses in Mercedes, Hidalgo County.

City: Mercedes
County: Hidalgo County
State: Texas
Prefix: 785xx

Where this code sits

78570 is part of the 785xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mercedes.

Mercedes Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78570 delivers to without sharing its boundary.

956 Area code 956

ZIP codes nearest 78570

The ZIP codes whose reference points sit closest to 78570.
ZIP code	Distance	Delivers to
ZIP code 78599	4.5 mi	Weslaco, TX
ZIP code 78596	4.5 mi	Weslaco, TX
ZIP code 78579	4.6 mi	Progreso, TX
ZIP code 78559	5.8 mi	La Feria, TX
ZIP code 78592	6.6 mi	Santa Maria, TX
ZIP code 78537	8.4 mi	Donna, TX
ZIP code 78593	9.2 mi	Santa Rosa, TX
ZIP code 78562	10 mi	La Villa, 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 78570, plotted from its record coordinates.

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

Scope ZIP code 78570. 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.