ZIP Code 78121

78121 is one of Texas's ZIP codes, delivering to addresses in La Vernia, Wilson County.

City: La Vernia
County: Wilson County
State: Texas
Prefix: 781xx

Where this code sits

78121 is part of the 781xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to La Vernia.

La Vernia Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78121 delivers to without sharing its boundary.

830 Area code 830

ZIP codes nearest 78121

The ZIP codes whose reference points sit closest to 78121.
ZIP code	Distance	Delivers to
ZIP code 78161	5.7 mi	Sutherland Springs, TX
ZIP code 78152	7.6 mi	Saint Hedwig, TX
ZIP code 78101	9.4 mi	Adkins, TX
ZIP code 78150	9.5 mi	Jbsa Randolph, TX
ZIP code 78263	12 mi	San Antonio, TX
ZIP code 78114	14 mi	Floresville, TX
ZIP code 78160	14 mi	Stockdale, TX
ZIP code 78115	14 mi	Geronimo, 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 78121, plotted from its record coordinates.

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

Scope ZIP code 78121. 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.