ZIP Code 78159

78159 is one of Texas's ZIP codes, delivering to addresses in Smiley, Gonzales County.

City: Smiley
County: Gonzales County
State: Texas
Prefix: 781xx

Where this code sits

78159 is part of the 781xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Smiley.

Smiley Texas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78159 delivers to without sharing its boundary.

830 Area code 830

ZIP codes nearest 78159

The ZIP codes whose reference points sit closest to 78159.
ZIP code	Distance	Delivers to
ZIP code 78140	8.2 mi	Nixon, TX
ZIP code 78677	8.3 mi	Wrightsboro, TX
ZIP code 77994	12 mi	Westhoff, TX
ZIP code 78122	12 mi	Leesville, TX
ZIP code 78614	12 mi	Cost, TX
ZIP code 78143	13 mi	Pandora, TX
ZIP code 78111	17 mi	Ecleto, TX
ZIP code 78604	18 mi	Belmont, 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 78159, plotted from its record coordinates.

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

Scope ZIP code 78159. 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.