ZIP Code 78614

78614 is one of Texas's ZIP codes, delivering to addresses in Cost, Gonzales County.

City: Cost
County: Gonzales County
State: Texas
Prefix: 786xx

Where this code sits

78614 is part of the 786xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Cost.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 78614 delivers to without sharing its boundary.

830 Area code 830

ZIP codes nearest 78614

The ZIP codes whose reference points sit closest to 78614.
ZIP code	Distance	Delivers to
ZIP code 78677	4.1 mi	Wrightsboro, TX
ZIP code 78629	8.2 mi	Gonzales, TX
ZIP code 78604	10 mi	Belmont, TX
ZIP code 78658	12 mi	Ottine, TX
ZIP code 78159	12 mi	Smiley, TX
ZIP code 78122	13 mi	Leesville, TX
ZIP code 78140	15 mi	Nixon, TX
ZIP code 78632	17 mi	Harwood, 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 78614, plotted from its record coordinates.

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

Scope ZIP code 78614. 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.