ZIP Code 78516

78516 is one of Texas's ZIP codes, delivering to addresses in Alamo, Hidalgo County.

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

Where this code sits

78516 is part of the 785xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Alamo.

Alamo Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78516 delivers to without sharing its boundary.

956 Area code 956

ZIP codes nearest 78516

The ZIP codes whose reference points sit closest to 78516.
ZIP code	Distance	Delivers to
ZIP code 78589	2.5 mi	San Juan, TX
ZIP code 78537	4.3 mi	Donna, TX
ZIP code 78577	4.5 mi	Pharr, TX
ZIP code 78502	6.9 mi	Mcallen, TX
ZIP code 78505	7.1 mi	Mcallen, TX
ZIP code 78539	7.4 mi	Edinburg, TX
ZIP code 78501	7.6 mi	Mcallen, TX
ZIP code 78596	8.1 mi	Weslaco, 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 78516, plotted from its record coordinates.

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

Scope ZIP code 78516. 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.