435 area code — Saint George, UT geographic
435 is the area code for Saint George, Utah, in service since September 21, 1997, Mountain time. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.
NANPA lists 493 active NXX prefixes in 435, assigned to 55 carriers. 314 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 113 rate centers (billing localities).
To check where a specific 435 number was issued, look up its six-digit prefix; to check who is actually calling, ignore the display and verify through an official callback number — caller ID is assertable and routinely spoofed.
The dialing plan is 7D for home-NPA local calls and 7D across codes.
Official projections put exhaust at 1Q 2076.
Its parent code is 801, which it left in 1997.
Largest localities in 435
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Saint George | 52 | — |
| Logan | 45 | — |
| Park City | 32 | — |
| Tooele | 30 | — |
| Brigham City | 23 | — |
| Cedar City | 22 | — |
| Heber City | 13 | — |
| Richfield | 10 | — |
| Price | 9 | — |
| Vernal | 8 | — |
FAQ
Is 435 a toll-free number?
No. 435 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Will 435 run out of numbers?
NANPA's current forecast projects exhaust in 1Q 2076 — decades of capacity remain.
Why am I getting spam calls from 435 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 435 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 435 number from?
435 is assigned to Saint George and surrounding areas of Utah in the Mountain time zone. The three digits after the area code (the prefix) narrow it down to a rate center.