Westby Montana ZIP Codes
Westby holds a single ZIP code.
Every ZIP code in Westby
| ZIP code | County |
|---|---|
| 59275 | Sheridan County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Westby codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Westby. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Westby ZIP code begins 592. Those first three digits identify the sectional center facility that processes mail for this part of Montana. Statewide that range covers 41 ZIP codes, so Westby accounts for 2% of it.
Every Montana ZIP prefix and the region it covers →
Area codes covering Westby
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Westby occupies.
Westby Montana area codes in full →
Where Westby's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Westby
| City | Distance | ZIP codes |
|---|---|---|
| Plentywood Montana ZIP codes | 24 mi | 1 ZIP code |
| Medicine Lake Montana ZIP codes | 33 mi | 1 ZIP code |
| Outlook Montana ZIP codes | 33 mi | 1 ZIP code |
| Froid Montana ZIP codes | 42 mi | 1 ZIP code |
| Bainville Montana ZIP codes | 51 mi | 1 ZIP code |
| Flaxville Montana ZIP codes | 51 mi | 1 ZIP code |
| Culbertson Montana ZIP codes | 54 mi | 1 ZIP code |
| Scobey Montana ZIP codes | 62 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.