City · Montana · United States
Basin, MT — ZIP codes
1 ZIP code · Jefferson County
- City
- Basin
- County
- Jefferson
- State
- Montana
- Country
- United States
- Postal code
- 59631Single source
- Coordinates
- 46.3296, -112.1967 View on OpenStreetMap
- Area code
- 406 (from the nearest rate centre)
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 59631 | Basin | Single source |
Sources and verification
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Last generated : 2026-08-21. Report an error.