ZIP Code 84756
About Newcastle
Newcastle is an unincorporated community and census-designated place (CDP) in southwestern Iron County, Utah, United States. It lies along State Route 56, 30 miles (48 km) west of Cedar City. Newcastle has a post office with the ZIP code of 84756. The population was 330 at the 2020 census. Newcastle was founded in 1910 by citizens of the more isolated Pinto.
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Area Profile
US Census (ACS 5-year · Gazetteer)
253
population
4
people / sq mi
$218,800
median home value
64.0
median age
111
housing units
83
households
71.1
land area (sq mi)