Area Code 435 — Logan, Utah

NANP area code

435

UTC−7, UTC−6 during daylight saving

State
Utah
Primary city
Logan
Time zone
Mountain
In service
1997

The code reaches 204 communities and 24 counties across Utah.

Was this call legitimate?

The area code itself carries no risk signal. 435 is assigned to Logan, Utah, so a call from it is consistent with a real caller in that area — but the digits alone prove nothing, because they can be forged.

Caller ID is set by whoever places the call, not verified by the network. That is why neighbour spoofing works: an operation anywhere in the world can display a number that matches the area code — and often the first three digits after it — of the person being called, so the call looks local. Every community in the 435 territory is a plausible-looking origin for a forged 435 number, which is why one can be made to look like a neighbour to so many people.

If you did not recognise the call: let it go to voicemail — a legitimate caller with real business will leave one. Do not return the call using the number shown; look the organisation up independently and call the number you found. Never confirm personal details, card numbers, or one-time codes to someone who called you, however plausible the number looked.

Codes.zone publishes no complaint counts, risk scores, or caller identities. We hold no data on individual numbers and will not estimate what we cannot source.

Local time and when to call back

Time there now

Mountain · UTC−7, UTC−6 during daylight saving

Reasonable callback window

8:00 AM – 9:00 PM

local time in Mountain

Federal rules bar telemarketing calls to a residence outside 8:00 AM–9:00 PM in the called party's own time zone. It is a sensible bound for a personal callback too — and a caller who rang you well outside it was not observing it.

Overlay codes

435 is the only area code serving its territory — it has no overlay in the current numbering plan for Utah. Where a region has no overlay, a number's area code still corresponds to a single geographic area.

Cities served

largest 20 by ZIP count
Communities served by area code 435, ranked by how many ZIP codes each holds.
CityZIP codesCounty
Logan4Cache County
Saint George4Washington County
Park City3Summit County
Cedar City2Iron County
Vernal2Uintah County
Altamont1Duchesne County
Alton1Kane County
Altonah1Duchesne County
Aneth1San Juan County
Annabella1Sevier County
Antimony1Garfield County
Aurora1Sevier County
Axtell1Sanpete County
Bear River City1Box Elder County
Beaver1Beaver County
Beryl1Iron County
Bicknell1Wayne County
Blanding1San Juan County
Bluebell1Duchesne County
Bluff1San Juan County

184 further communities not listed. All Utah area codes →

Each point is a community served by 435, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Scope every community matched to 435. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot), GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . Coordinates are place reference points, not boundaries.

Counties

Prefixes inside 435

We do not publish the NXX prefixes inside 435. The assignment of prefixes to rate centres comes from LERG routing data, which is proprietary, and we will not estimate it from postal data — ZIP codes and telephone prefixes do not map onto each other. Awaiting a clean-rights NPA-NXX source.