City · Utah · United States
Newcastle, UT — ZIP codes
1 ZIP code · Iron County
- City
- Newcastle
- County
- Iron
- State
- Utah
- Country
- United States
- Postal code
- 84756Single source
- Coordinates
- 37.6924, -113.6272 View on OpenStreetMap
- Area code
- 435 (from the nearest rate centre)
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 84756 | Newcastle | 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) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Last generated : 2026-08-21. Report an error.