The U.S. state of Washington currently has five telephone area codes. The first was area code 206 which at the time covered all the state. In 1957 the state was divided in half when area code 509 was created to cover Eastern Washington leaving 206 to cover Western Washington. In 1995 206 was split again covering just the Puget Sound Area after Area code 360 was created to cover the remaining area. The most current split as of 2009 was in 1997 when 425 and 253 took over most of the Seattle Metro leaving 206 to cover just the city of Seattle and neighboring cities in King and Snohomish counties.
Area codes and major cities
- Area code 206: Seattle
- Area code 253: Tacoma, Federal Way, Auburn
- Area code 360: Olympia, Bellingham, Vancouver
- Area code 425: Bellevue, Everett
- Area code 509: Spokane, Yakima, Kennewick
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