ZIP Code 78557

78557 is one of Texas's ZIP codes, delivering to addresses in Hidalgo, Hidalgo County.

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

Where this code sits

78557 is part of the 785xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hidalgo.

Hidalgo Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78557 delivers to without sharing its boundary.

956 Area code 956

ZIP codes nearest 78557

The ZIP codes whose reference points sit closest to 78557.
ZIP code	Distance	Delivers to
ZIP code 78503	5.1 mi	Mcallen, TX
ZIP code 78577	6.6 mi	Pharr, TX
ZIP code 78505	7.1 mi	Mcallen, TX
ZIP code 78501	7.9 mi	Mcallen, TX
ZIP code 78572	9.0 mi	Mission, TX
ZIP code 78589	9.4 mi	San Juan, TX
ZIP code 78516	11 mi	Alamo, TX
ZIP code 78504	11 mi	Mcallen, 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 78557, plotted from its record coordinates.

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

Scope ZIP code 78557. 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.