City · Montana · United States
Fort Peck, MT — ZIP codes
1 ZIP code · Valley County
- City
- Fort Peck
- County
- Valley
- State
- Montana
- Country
- United States
- Postal code
- 59223Single source
- Coordinates
- 48.0089, -106.4486 View on OpenStreetMap
- Area code
- 406
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 59223 | Fort Peck | 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.