ZIP Code 78503

78503 is one of Texas's ZIP codes, delivering to addresses in Mcallen, Hidalgo County.

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

Where this code sits

78503 is part of the 785xx range, the group of codes handled by one mail processing centre. Mcallen is served by 5 ZIP codes in total; the full list, with the county each falls in, is on the Mcallen page.

Mcallen Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78503 delivers to without sharing its boundary.

956 Area code 956

ZIP codes nearest 78503

The ZIP codes whose reference points sit closest to 78503.
ZIP code	Distance	Delivers to
ZIP code 78505	2.3 mi	Mcallen, TX
ZIP code 78501	2.8 mi	Mcallen, TX
ZIP code 78577	4.0 mi	Pharr, TX
ZIP code 78557	5.1 mi	Hidalgo, TX
ZIP code 78572	5.3 mi	Mission, TX
ZIP code 78504	5.6 mi	Mcallen, TX
ZIP code 78589	6.4 mi	San Juan, TX
ZIP code 78502	6.4 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 78503, plotted from its record coordinates.

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

Scope ZIP code 78503. 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.