Gonzales County ZIP Codes

Gonzales County is a county of Texas.

ZIP codes: 10
Cities & towns: 10
Area codes: 2
Land area: 1,067 sq mi

Every ZIP code in Gonzales County

781xx–789xx

The complete list of Gonzales County, TX ZIP codes with the city each one delivers to.
ZIP code	City
78122	Leesville
78140	Nixon
78159	Smiley
78604	Belmont
78614	Cost
78629	Gonzales
78632	Harwood
78658	Ottine
78677	Wrightsboro
78959	Waelder

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Gonzales County codes above are listed without a column we would have to invent.

Cities and towns in Gonzales County

A further 6 places in Gonzales County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Gonzales County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Gonzales County's ZIP codes sit

Each point is the reference point of one Gonzales County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

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

Scope every ZIP code recorded in Gonzales County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.