Petroleum County ZIP Codes
Petroleum County is a county of Montana.
- ZIP codes
- 2
- Cities & towns
- 2
- Area codes
- 1
- Land area
- 1,656 sq mi
Every ZIP code in Petroleum County
| ZIP code | City |
|---|---|
| 59084 | Teigen |
| 59087 | Winnett |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Petroleum County codes above are listed without a column we would have to invent.
Cities and towns in Petroleum County
A further 1 place in Petroleum County appears in the postal source without a page of its own; its codes are in the table above and each one links to its own page.
Area codes covering Petroleum County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
Scope every ZIP code recorded in Petroleum 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 . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.