Main city: Tremonton
Timezone: Mountain
Phone type: Landline
Operator: North County Communications Corporation

Tremonton, a city in Box Elder County, Utah, United States. The population was 7,647 at the 2010 census. ^source

North American Area Code 435 is a telephone area code which covers all of the U.S. state of Utah outside the Wasatch Front (which includes the Salt Lake City, Ogden, and Provo metropolitan areas in northern Utah). It split from the 801 area code on 21 September 1997, and includes Beaver, Brigham City, Castle Dale, Cedar City, Coalville, Duchense, Fillmore, Heber City, Hurricane, Junction, Kanab, Loa, Logan, Manila, Manti, Moab, Monticello, Nephi, Park City, Panguitch, Parowan, Price, Randolph, Richfield, St. George, Tooele, Washington, and Vernal. Before Area Code 435 entered service, 801 had been Utah's sole area code for half a century. ^source