Every ZIP code in Starr County

785xx

The complete list of Starr County, TX ZIP codes with the city each one delivers to.
ZIP code	City
78536	Delmita
78545	Falcon Heights
78547	Garciasville
78548	Grulla
78582	Rio Grande City
78584	Roma
78585	Salineno
78588	San Isidro
78591	Santa Elena

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Starr County

A further 7 places in Starr 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 Starr County

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

Where Starr County's ZIP codes sit

Each point is the reference point of one Starr 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 Starr 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.