Where is the 435 area code?

Area code 435 covers Utah, on Mountain Time.

What time zone is area code 435 in?

Numbers in the 435 area code sit in Mountain Time.

Is 435 a toll-free or scam area code?

No. 435 is a geographic North American Numbering Plan area code assigned to Utah. Toll-free numbers use 800, 833, 844, 855, 866, 877 and 888. A call from 435 can still be spoofed, so treat unexpected calls with the usual caution.

Area code lookup

435 area code

Where the 435 area code is, which cities and counties it serves, the local time zone and the overlay codes dialled alongside it.

State: UT
Codes in state: 3
Overlays & neighbours: 2
Time zone: Mountain Time

Quick answer

Area code 435 is a geographic area code assigned to Utah under the North American Numbering Plan. Utah observes Mountain Time, and the state also holds 2 other area codes: 385, 801.

Largest cities in Utah

The largest places in Utah. Each links to its full local profile: population, income, housing and sales tax.

City	Population
Salt Lake City city	203,888
West Valley City city	137,955
West Jordan city	116,277
Provo city	114,303
St. George city	99,184
Orem city	97,048
Sandy city	94,723
Ogden city	86,973
Layton city	82,512
Lehi city	81,039
South Jordan city	80,331
Millcreek city	63,342

All Utah cities All Utah ZIP codes Utah sales tax

Related area codes

Codes that share or border the same calling area.

435 area code FAQ

The questions people ask about this code.

Where is area code 435?

435 is a geographic area code in Utah.

What time is it in the 435 area code?

435 observes Mountain Time.

Is 435 a scam area code?

No — it is a normal geographic code, not a toll-free or premium-rate prefix. Caller ID can be spoofed on any code, so verify unexpected callers before sharing information.

Sources & transparency

North American Numbering Plan Administrator (NANPA) area code assignments — area code to geography mapping and overlay relationships
US Census Bureau, American Community Survey 2019-2023 5-year estimates — city, county and ZIP code geography

Last reviewed August 2026. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.