Sidney Montana ZIP Codes
Sidney holds a single ZIP code.
Every ZIP code in Sidney
| ZIP code | County |
|---|---|
| 59270 | Richland 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Sidney codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Sidney. 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 Sidney 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 Sidney accounts for 2% of it.
Every Montana ZIP prefix and the region it covers →
Area codes covering Sidney
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 Sidney occupies.
Sidney Montana area codes in full →
Where Sidney's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Sidney
| City | Distance | ZIP codes |
|---|---|---|
| Fairview Montana ZIP codes | 11 mi | 1 ZIP code |
| Bainville Montana ZIP codes | 30 mi | 1 ZIP code |
| Culbertson Montana ZIP codes | 34 mi | 1 ZIP code |
| Richey Montana ZIP codes | 42 mi | 1 ZIP code |
| Froid Montana ZIP codes | 46 mi | 1 ZIP code |
| Glendive Montana ZIP codes | 49 mi | 1 ZIP code |
| Wibaux Montana ZIP codes | 50 mi | 1 ZIP code |
| Poplar Montana ZIP codes | 55 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.