425 Area Code — Washington
425 is a North American Numbering Plan area code for Washington, the United States. It covers about 1,353,122 people in 27 towns and 56 ZIP codes, including Everett, Renton and Bellevue.
| Field | Value |
|---|---|
| Area code | 425 |
| Country | United States (+1) |
| State / province | Washington |
| Type | Standalone (no other NANP code covers the same towns) |
| Time zone | Pacific |
| Population covered | 1,353,122 |
| Towns covered | 27 |
| ZIP codes | 56 |
| Approx. centre | 47.691, -122.126 |
Where area code 425 is used
Area code 425 is assigned to Washington, the United States, inside the North American Numbering Plan. Numbers in the code are written (425) NXX-XXXX at home and +1 425 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 425
The 27 towns below are the largest in the 425 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 |
|---|---|---|---|
| Everett | Snohomish County | 174,300 | 7 |
| Renton | King County | 158,600 | 5 |
| Bellevue | King County | 156,686 | 7 |
| Bothell | King County | 141,635 | 4 |
| Lynnwood | Snohomish County | 113,889 | 4 |
| Redmond | King County | 103,482 | 3 |
| Kirkland | King County | 93,513 | 3 |
| Issaquah | King County | 59,541 | 2 |
| Edmonds | Snohomish County | 58,527 | 2 |
| Sammamish | King County | 56,259 | 2 |
| Lake Stevens | Snohomish County | 52,752 | 1 |
| Woodinville | King County | 38,555 | 2 |
Counties covered
| County | ZIP codes |
|---|---|
| King County | 36 |
| Snohomish County | 19 |
| Kittitas County | 1 |
Nearby area codes
How to dial area code 425
- Within North America: 425 + 7-digit number (425-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 425, then the 7-digit number — for example 00 1 425 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 425?
425 is a North American Numbering Plan area code assigned to Washington, the United States. It covers about 1,353,122 people in 27 towns.
Is 425 a US or Canadian area code?
425 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 425 in?
Area code 425 is in the Pacific 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.