Seattle’s iconic 206 area code is set to share the stage with a new addition: area code 564. Starting June 10, 2025, new phone numbers in Seattle and nearby areas may be assigned the 564 area code as the existing 206 numbers approach exhaustion.
The introduction of the 564 area code is a response to the increasing demand for phone numbers, driven by the proliferation of mobile devices, tablets, smartwatches, and other connected gadgets. The Washington Utilities and Transportation Commission (WUTC) approved this overlay to ensure a continuous supply of numbers for the region.
Area code 564 isn’t entirely new; it was first implemented in 2017 to overlay the 360 area code, serving parts of western Washington. Now, it’s being extended to overlay the 206 area code, which includes Seattle and its immediate suburbs.
The addition of the 564 area code marks a new chapter in Seattle’s telecommunications history. While the 206 area code will continue to be a part of the city’s identity, the introduction of 564 ensures that the growing population and technological needs of the region are met without disruption.
Residents and businesses are encouraged to update any materials that include their phone numbers to ensure clarity and avoid confusion as the new area code is implemented.
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