Newcastle, UT ZIP code
The ZIP code for Newcastle, Utah is 84756. It is in Iron County.
- Population in these ZIPs
- 390
- Avg. median income
- $85,500population-weighted
- Typical home value
- $255,400population-weighted
- Metro area
- Cedar City, UT
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Newcastle, UT ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 84756 | 390 | $85,489 | $255,400 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Newcastle
- Beryl 14 mi
- Central 18 mi
- Cedar City 19 mi
- Enterprise 19 mi
- Pine Valley 24 mi
- New Harmony 25 mi
- Veyo 26 mi
- Kanarraville 26 mi
- Summit 33 mi
- Gunlock 34 mi
- Dammeron Valley 34 mi
- Leeds 36 mi
Frequently asked questions
What is the ZIP code for Newcastle, UT?
The ZIP code for Newcastle, UT is 84756.
What county is Newcastle, Utah in?
Newcastle ZIP codes are in Iron County.