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Zip Code 84756 — Newcastle, UT

84756 is a ZIP Code associated with Newcastle, UT, located within Iron. The postal region supports an estimated population of 390 residents across Data Pending housing units, with a population density of 2.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (37.742490, -113.547720)

Data MetricLocal Statistic
Postal / Zip Code84756
Primary CityNewcastle
State / ProvinceUT
CountyIron
Total Population390
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2.1 people/sq mi
TimezoneAmerica/Denver

How 84756 Compares

MetricZIP 84756Iron CountyUT State Average
Population39062,1803,390,495
Median IncomeData PendingN/AN/A
Population Density2.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 84714Beryl13.5 mi779N/A
Zip 84722Central17.8 mi660N/A
Zip 84725Enterprise19.0 mi2,054N/A
Zip 84720Cedar City20.5 mi25,708N/A
Zip 84721Cedar City22.7 mi30,641N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →