Area Code 425 — Seattle, Washington

NANP area code

425

UTC−8, UTC−7 during daylight saving

State
Washington
Primary city
Seattle
Time zone
Pacific
In service
1997

The code reaches 35 communities and 2 counties across Washington.

Was this call legitimate?

The area code itself carries no risk signal. 425 is assigned to Seattle, Washington, 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 425 territory is a plausible-looking origin for a forged 425 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

Pacific · UTC−8, UTC−7 during daylight saving

Reasonable callback window

8:00 AM – 9:00 PM

local time in Pacific

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

425 is the only area code serving its territory — it has no overlay in the current numbering plan for Washington. 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 425, ranked by how many ZIP codes each holds.
CityZIP codesCounty
Seattle59King County
Bellevue7King County
Everett7Snohomish County
Kent7King County
Renton5King County
Bothell4King County
Lynnwood4Snohomish County
Kirkland3King County
Redmond3King County
Snohomish3Snohomish County
Edmonds2Snohomish County
Issaquah2King County
Marysville2Snohomish County
Sammamish2King County
Woodinville2King County
Arlington1Snohomish County
Carnation1King County
Duvall1King County
Fall City1King County
Hobart1King County

15 further communities not listed. All Washington area codes →

Each point is a community served by 425, 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 425. 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 425

We do not publish the NXX prefixes inside 425. 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.