Square Butte ZIP codes, Montana
No ZIP code is named for Square Butte, MT; addresses there use a neighbouring town's name. The ZIP code covering it is 59446. Its area code is 406.
- USPS city name
- 0 ZIP codes
- Overlapping the city
- 1 more
- Population
- 28
- Area code
- 406
- County
- Chouteau County
- State
- Montana
NANPA lists no telephone rate centre for Square Butte itself, so these are the area codes of the nearest one, Geraldine (0.0 miles). A town on an area-code boundary can differ from its neighbour.
ZIP codes covering Square Butte
These ZIP codes cover part of Square Butte but are addressed as somewhere else.
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
59446 | Geraldine , MT | Standard | 629 | $53,750 | $152,500 |
Map of Square Butte ZIP codes
The ZIP codes of Square Butte, MT, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Towns near Square Butte
The nearest larger towns are Geraldine (317 people, 6.8 mi), Coffee Creek (61 people, 13 mi) and Denton (193 people, 18 mi).
More nearby: every ZIP code in Chouteau County · Montana ZIP codes
Cite this page
zipcodes.pro. “Square Butte, MT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mt/square-butte
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