Rosebud County ZIP Codes

Rosebud County is a county of Montana.

ZIP codes: 11
Cities & towns: 10
Area codes: 1
Land area: 5,008 sq mi

Every ZIP code in Rosebud County

590xx–593xx

The complete list of Rosebud County, MT ZIP codes with the city each one delivers to.
ZIP code	City
59003	Ashland
59004	Ashland
59012	Birney
59039	Ingomar
59043	Lame Deer
59083	Sumatra
59312	Angela
59323	Colstrip
59327	Forsyth
59333	Hathaway
59347	Rosebud

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Rosebud County

A further 8 places in Rosebud 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 Rosebud County

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

406 Area code 406

Where Rosebud County's ZIP codes sit

Each point is the reference point of one Rosebud 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 Rosebud 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.