ZIP Code 78384

78384 is one of Texas's ZIP codes, delivering to addresses in San Diego, Duval County.

City: San Diego
County: Duval County
State: Texas
Prefix: 783xx

Where this code sits

78384 is part of the 783xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to San Diego.

San Diego Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78384 delivers to without sharing its boundary.

361 Area code 361

ZIP codes nearest 78384

The ZIP codes whose reference points sit closest to 78384.
ZIP code	Distance	Delivers to
ZIP code 78332	10 mi	Alice, TX
ZIP code 78333	11 mi	Alice, TX
ZIP code 78342	13 mi	Ben Bolt, TX
ZIP code 78341	16 mi	Benavides, TX
ZIP code 78372	21 mi	Orange Grove, TX
ZIP code 78330	21 mi	Agua Dulce, TX
ZIP code 78357	23 mi	Freer, TX
ZIP code 78349	27 mi	Concepcion, 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 78384, plotted from its record coordinates.

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

Scope ZIP code 78384. 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.