435 area code
St. George area, Mountain Time.Area code 435 covers St. George, Logan, Park City and 109 more places in Utah, on Mountain Time.
Right now in St. George
Mountain Time (MST, UTC-7; MDT, UTC-6 in summer)
Calling hours: Mon to Sat, 8 AM to 9 PM · Sun, no calls (Utah law)
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Where 435 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 435 has 112. Each one's share is how many 435 numbers start there. Its biggest metro area is Salt Lake City-Murray, UT.
- St. George11%
- Logan9%
- Park City6%
- Tooele6%
- Brigham City5%
- Cedar City4%
- Heber City3%
- Richfield2%
Also: Price, Castle Dale, Kamas, Nephi, Vernal, Beaver, Moab, Bear River City, Duchesne, Roosevelt, Salina, Tremonton + 92 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 435 number?
Sales calls to homes and cell phones have legal hours, set by Utah law. Hold every 435 number to them, since you can't tell a work line from a personal cell.
What applies to 435Mon to Sat, 8 AM to 9 PM · Sun, no calls
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Utah lawMon to Sat, 8 AM to 9 PM · Sun, no callsNo calls on legal holidays either, which the tool doesn't track.Utah Code 13-25a-103(3) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 435 area code
435 went into service on September 21, 1997, split off from 801. Local calls can still be dialed with 7 digits.
- 1997435 starts
Source: NANPA area code database
Other Utah area codes
All Utah area codesCalling a list of 435 numbers?
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435 area code FAQ
What area code is 435?
435 is an Utah area code for St. George, Logan, Park City, Tooele and 108 more places.
What time zone is the 435 area code in?
Mountain Time (MST, UTC-7; MDT, UTC-6 in summer).
What are the calling hours for 435 numbers?
Mon to Sat, 8 AM to 9 PM · Sun, no calls, local time, under Utah law.
When did the 435 area code start?
On September 21, 1997. It was split from 801.
Calling 435 numbers? Reach more of them.
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