ZIP Code 78039

78039 is one of Texas's ZIP codes, delivering to addresses in La Coste, Medina County.

City: La Coste
County: Medina County
State: Texas
Prefix: 780xx

Where this code sits

78039 is part of the 780xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to La Coste.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78039 delivers to without sharing its boundary.

830 Area code 830

ZIP codes nearest 78039

The ZIP codes whose reference points sit closest to 78039.
ZIP code	Distance	Delivers to
ZIP code 78002	5.0 mi	Atascosa, TX
ZIP code 78052	5.1 mi	Lytle, TX
ZIP code 78009	5.3 mi	Castroville, TX
ZIP code 78059	7.1 mi	Natalia, TX
ZIP code 78054	7.4 mi	Macdona, TX
ZIP code 78073	9.0 mi	Von Ormy, TX
ZIP code 78252	10 mi	San Antonio, TX
ZIP code 78069	11 mi	Somerset, 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 78039, plotted from its record coordinates.

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

Scope ZIP code 78039. 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.