The 564 area code is not new to Washington. It was introduced in 2017 as an overlay for the 360 area code, which covers areas outside the Seattle metro region. Now, it will expand to include the ...

In 2017, the commission approved an overlay of the 564 area code only for the 360 number plan area." Current numbers with the 206 area code will not change.

The 564 area code was first introduced in 2017 to provide relief to the 360 area code. Now, as part of a step approach, the 564 area code will be extended to cover the 206 area code, according to ...

It’s the end of an era. Or rather, the end of an area code. As the 206 area code is almost exhausted in Seattle, a new code will hit the city next month. Say hello to 564. The new area code was ...

The state agency in charge of area codes says the 206 is exhausted. The new 564 area code offers a good time to reflect on the region's unrelenting growth.

The Washington Utilities and Transportation Commission (UTC) is changing the 206 area code as it works to ensure the availability of future telephone numbers in western Washington. Beginning June ...

when 360 numbers began to run out. The area code is already in use on the Olympic Peninsula, southwest Washington, eastern Pierce and King Counties and also in Snohomish, Skagit and Whatcom Counties.