Washington Area Codes
Compare 6 in-service area codes assigned to Washington. Explore each code’s introduction date, overlays, possible time zones, and public prefix records.
Washington numbering at a glance
- In-service area codes
- 6
- Time-zone labels in NANPA data
- Pacific
- Listed in-service or assigned prefixes
- 3,525 · source dated 2026-09-29
These are numbering assignments. The counts do not represent active phone numbers, current carriers, or a caller’s physical location.
Compare area codes in Washington
| Code | Introduced | Other codes in overlay | Time zones | Listed prefixes |
|---|---|---|---|---|
| 206 | 01-Jan-1947 | 564 | Pacific | 751 |
| 253 | 27-Apr-1997 | None listed | Pacific | 508 |
| 360 | 15-Jan-1995 | 564 | Pacific | 786 |
| 425 | 27-Apr-1997 | None listed | Pacific | 628 |
| 509 | 01-Jan-1957 | None listed | Pacific | 760 |
| 564 | 28-Aug-2017 | 206, 360 | Pacific | 92 |
Source: NANPA NPA database, dated 2026-09-28. Prefix counts: NANPA US assignment report. View official area-code maps.
Overlay groups in Washington
Codes in an overlay group can serve the same broad numbering area. A person may keep a number after moving, and the displayed number may be spoofed.
Find a number in Washington
Open an area-code page above to check a prefix and possible time zones. You can also search US telephone rate-center names; those names are not exact city coverage.
A code cannot verify the owner of a number. If an unexpected caller asks for money or sensitive information, verify the claim independently.