435 Area Code — Utah
435 is a North American Numbering Plan area code for Utah, the United States. It covers about 805,194 people in 195 towns and 205 ZIP codes, including Saint George, Logan and Tooele.
| Field | Value |
|---|---|
| Area code | 435 |
| Country | United States (+1) |
| State / province | Utah |
| Type | Standalone (no other NANP code covers the same towns) |
| Time zone | Mountain |
| Population covered | 805,194 |
| Towns covered | 195 |
| ZIP codes | 205 |
| Approx. centre | 39.429, -111.820 |
Where area code 435 is used
Area code 435 is assigned to Utah, the United States, inside the North American Numbering Plan. Numbers in the code are written (435) NXX-XXXX at home and +1 435 NXX-XXXX when dialled from outside Canada and the United States. Since the NANP moved to 10-digit dialling you must always include the area code, even for a local call.
Towns and cities in area code 435
The 195 towns below are the largest in the 435 footprint, ranked by population. Every one of them links to its own page with the full list of area codes and ZIP codes for that town.
| Town | County | Population | ZIP codes |
|---|---|---|---|
| Saint George | Washington County | 104,289 | 4 |
| Logan | Cache County | 77,262 | 4 |
| Tooele | Tooele County | 59,706 | 1 |
| Cedar City | Iron County | 56,349 | 2 |
| Washington | Washington County | 32,366 | 1 |
| Vernal | Uintah County | 30,975 | 2 |
| Park City | Summit County | 28,976 | 3 |
| Brigham City | Box Elder County | 27,053 | 1 |
| Heber City | Wasatch County | 26,111 | 1 |
| Hurricane | Washington County | 24,359 | 1 |
| Smithfield | Cache County | 16,210 | 1 |
| Tremonton | Box Elder County | 16,199 | 1 |
Counties covered
| County | ZIP codes |
|---|---|
| Washington County | 21 |
| Cache County | 19 |
| Box Elder County | 17 |
| Sanpete County | 15 |
| Duchesne County | 12 |
| Sevier County | 12 |
| Millard County | 11 |
| Iron County | 10 |
| Emery County | 9 |
| Summit County | 8 |
| Uintah County | 8 |
| San Juan County | 8 |
Nearby area codes
How to dial area code 435
- Within North America: 435 + 7-digit number (435-NXX-XXXX). The leading 1 is optional on a mobile phone and required on most landlines for long-distance.
- From abroad: your country's international prefix, then 1, then 435, then the 7-digit number — for example 00 1 435 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 435?
435 is a North American Numbering Plan area code assigned to Utah, the United States. It covers about 805,194 people in 195 towns.
Is 435 a US or Canadian area code?
435 is a United States area code. Canada and the United States share the +1 country code, so both are part of the same numbering plan.
What time zone is area code 435 in?
Area code 435 is in the Mountain time zone.
Do I have to dial 10 digits?
Yes. Every NANP call now requires the area code plus the seven-digit number, even for a local call.