Gallatin County ZIP Codes

Gallatin County is a county of Montana.

ZIP codes: 13
Cities & towns: 8
Area codes: 1
Land area: 2,605 sq mi

Every ZIP code in Gallatin County

597xx

The complete list of Gallatin County, MT ZIP codes with the city each one delivers to.
ZIP code	City
59714	Belgrade
59715	Bozeman
59716	Big Sky
59717	Bozeman
59718	Bozeman
59719	Bozeman
59730	Gallatin Gateway
59741	Manhattan
59752	Three Forks
59758	West Yellowstone
59760	Willow Creek
59771	Bozeman
59772	Bozeman

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Gallatin County

A further 3 places in Gallatin 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 Gallatin 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 Gallatin County's ZIP codes sit

Each point is the reference point of one Gallatin 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 Gallatin 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.