The area code is also used for the Colorado City, AZ school district.
435 is one of the most thinly populated area codes in the nation; the great majority of Utah's population—and with it, most of its landlines and cell phones—is located along the Wasatch Front. As a result, 435 is nowhere near exhaustion. The projected exhaust date for 435 is 2041.[1]
^"Archived copy"(PDF). www.nationalnanpa.com. Archived from the original(PDF) on February 21, 2020. Retrieved January 11, 2022.{{cite web}}: CS1 maint: archived copy as title (link)