Telephone numbers in Washington are designated to different regions that all have unique area codes. Knowledge of the area codes in the state allows one to easily filter out suspicious calls that come from unfamiliar areas. With reverse phone lookup searches, residents of Washington can identify unknown callers by their phone numbers.
Below are the six area codes for the State of Washington:
| 206 - Location | |||
| 253 - Location | |||
| 360 - Location | |||
| 425 - Location | |||
| 509 - Location | |||
| 564 - Location | |||
Who Controls Washington Area Codes?
The Washington Utilities and Transportation Commission is responsible for the implementation of new area codes and the maintenance of existing ones within the state. New area codes, referred to as overlays and splits, are created when existing ones run out of phone lines to assign to residents.
Where is Area Code 206?
Area code 206 was created in 1947 as the first area code in Washington in the national numbering plan. It represents the greater Seattle area, covering sections of the Seattle metro area from Woodway to Des Moines, as well as the islands of Vashon, Mercer, and Bainbridge.
Where is Area Code 509?
Area code 509 is Washington’s second area code and was created in 1957 as a split from 206. It covers Eastern Washington which includes Yakima, the Tri-Cities, Walla Walla, Wenatchee, and Spokane.
Where is Area Code 360?
Area code 360 went into service in 1995 as a split from 206. The code encompasses the whole of Western Washington except for Pierce, Snohomish, and King counties along with Bainbridge Island.
Where is Area Code 253?
Area code 253 covers the outskirts of Southern Seattle as well as the South Puget Sound area. It was created in 1997 along with area code 425 in another split from area code 206.
Where is Area Code 425?
Area code 425 was launched in 1997 after being split from 206, along with area code 253. It represents the northern and southern suburbs of Seattle.
Where is Area Code 564?
Area code 564 is an overlay of area code 360. It went into service in 2017 and covers Western Washington except for Pierce, Snohomish, and King counties along with Bainbridge Island.