Golden Valley County ZIP Codes

Golden Valley County is a county of Montana.

ZIP codes: 2
Cities & towns: 2
Area codes: 1
Land area: 1,174 sq mi

Every ZIP code in Golden Valley County

590xx

The complete list of Golden Valley County, MT ZIP codes with the city each one delivers to.
ZIP code	City
59046	Lavina
59074	Ryegate

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Golden Valley County

Area codes covering Golden Valley County

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

406 Area code 406

Scope every ZIP code recorded in Golden Valley 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.