Every ZIP code in Duval County

783xx

The complete list of Duval County, TX ZIP codes with the city each one delivers to.
ZIP code	City
78341	Benavides
78349	Concepcion
78357	Freer
78376	Realitos
78384	San Diego

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Duval County codes above are listed without a column we would have to invent.

Cities and towns in Duval County

A further 2 places in Duval 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 Duval County

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

Where Duval County's ZIP codes sit

Each point is the reference point of one Duval 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 Duval 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.