Lamb County ZIP Codes

Lamb County is a county of Texas.

ZIP codes: 8
Cities & towns: 8
Area codes: 1
Land area: 1,016 sq mi

Every ZIP code in Lamb County

790xx–793xx

The complete list of Lamb County, TX ZIP codes with the city each one delivers to.
ZIP code	City
79031	Earth
79064	Olton
79082	Springlake
79312	Amherst
79326	Fieldton
79339	Littlefield
79369	Spade
79371	Sudan

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Lamb County

A further 2 places in Lamb 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 Lamb County

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

806 Area code 806

Where Lamb County's ZIP codes sit

Each point is the reference point of one Lamb 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 Lamb 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.