Area Code 564 to Overlay the Washington 206 Area Code Region
To ensure a continuing supply of telephone numbers, the Washington Utilities and Transportation Commission has approved an all-services overlay for the 206 area code region. The 206 area code serves Seattle, Shoreline, Lake Forest Park, Mercer, Bainbridge, Vashon Island, the northern portion of Des Moines (which is split between the 206 and 253 area codes) and other smaller communities. The 564 area code currently overlays the 360 area code and will be expanded to serve the same geographic area currently served by the existing 206 area code.
What is an additional Area Code Overlay?
An overlay is the addition of another area code (564) to the same geographic region as an existing area code (206). The overlay does not require you to change your existing area code or phone number, or how you dial your calls.
Who is affected and when does the 564 area code become effective?
The 564 area code overlay was introduced initially in the existing 360 area code region and is expanding into the 206 area code.
Beginning June 10, 2025, customers may be assigned a number in the 564 area code when they request new service or an additional line. Customers receiving the 564 area code will use the current dialing procedure requiring callers to dial 10 digits when placing a call.
What will remain the same?
- Your current telephone number.
- The price of a call, coverage area, or other rates and services will not change due to the overlay.
- What is a local call now will remain a local call.
- You will still need to dial 1+ area code + telephone number to place long-distance calls.
- You can still dial three digits to reach 911 and 988, as well as 211, 311, 411, 511, 611, 711 or 811 if those are currently available in your community.
Who may you contact with questions?
If you have any questions regarding the information provided in this notice, please call Metro by