ZIP code · Newcastle · Utah · United States

ZIP code 84756 — Newcastle

ZIP code 84756 serves Newcastle, Utah.

Postal code
84756
Single source Value from one source, not cross-checked.
City
Newcastle
County
Iron FIPS 49021
State
Utah
Country
United States
Coordinates
37.6924, -113.6272 — precision precise (locality)
View on OpenStreetMap
Population
253 (ZCTA, ACS 5-year)
Population density
4 / sq mi
Land area
71.1 sq mi (184.1 km²) (ZCTA, ACS 5-year)
Per-capita income
$27,970
Median age
64
Households
83
Housing units
111
Median home value
$218,800
Congressional district
UT-2 (119th Congress)
USDA hardiness zone
5b (-15 to -10 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Denver (UTC−7 / UTC−6 DST)
Area code
435 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 93°F), coldest Dec (avg low 12°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F444958657486939183695544
Avg low °F141823273544504939291812

NOAA 1991–2020 climate normals from the nearest station: ENTERPRISE BERYL JCT (5.6 mi) · NOAA NCEI

Places in ZIP 84756

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

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. Data generated on 2026-08-21. Methodology · Report an error on this page