Washington · Pacific Time
425 Area Code
Area code 425 is in Washington, serving Seattle's eastern and northern suburbs in King and Snohomish counties, Washington. It is in the Pacific Time zone.
Last updated October 1, 2026 · Source: NANPA
Where is the 425 area code?
425 is a Washington area code covering Seattle's eastern and northern suburbs in King and Snohomish counties, Washington. In the wider directory it sits in the West region.
Cities in the 425 area code
- Bellevue
- Everett
- Renton
- Kirkland
- Redmond
- Sammamish
- Lynnwood
- Bothell
- Edmonds
- Issaquah
- Mukilteo
- Mill Creek
- Woodinville
- Newcastle
Counties served by 425
King County and Snohomish County.
Dialing 425
Bellevue, WA is currently served by the single area code 425, with no overlay. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
From outside the US, dial +1 425 followed by the seven-digit number.
History of the 425 area code
425 went into service on April 27, 1997, created when it was split from 206. It serves Bellevue and the surrounding part of Washington. For how codes are created, split, and overlaid, see how area codes work.
Is 425 a scam or spam risk?
425 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 425 number on your screen is no guarantee the caller is in Bellevue, WA or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Washington area codes
Explore more
See every code in Washington, compare codes across the West region, or view all Pacific Time codes. You can also browse the 4XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
425 area code FAQ
Where is the 425 area code?
The 425 area code is in Washington, covering Seattle's eastern and northern suburbs in King and Snohomish counties, Washington, in the West region.
What cities are in the 425 area code?
Cities in the 425 area code include Bellevue, Everett, Renton, Kirkland, Redmond, Sammamish, Lynnwood, Bothell, Edmonds and Issaquah.
What time zone is 425 in?
425 is in the Pacific Time zone.
When did the 425 area code start?
425 went into service on April 27, 1997.
Do I have to dial 10 digits for 425?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 425 a toll-free or premium code?
No. 425 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.