List of Washington (state) area codes

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Area codes in Washington state NANP-US-WA-NPA206 2023.png
Area codes in Washington state

The U.S. state of Washington has six telephone area codes. The state initially used a single area code (206) until it was divided in 1957 with the creation of area code 509 to serve Eastern Washington. In 1995, 206 was split again to serve just the Puget Sound region after area code 360 was created for the remainder of Western Washington. In 1997, area code 425 was assigned to Seattle's Eastside and South Snohomish County suburbs and area code 253 for the Tacoma area, leaving 206 for just the city of Seattle, closely neighboring cities in King and Snohomish counties, and Bainbridge Island in Kitsap County.

Contents

Area codes in Washington
CodeCreatedRegions and citiesDescription
206 January 1, 1947 Seattle, Shoreline, Lake Forest Park, Mercer Island, Bainbridge Island, Vashon Island Original statewide area code until 1957, when area code 509 was created for Eastern Washington. Further splits in 1995 to create area code 360 for most of Western Washington, and 1997 to form area codes 253 and 425. 564 will be added to the 206 area in 2025.
509 January 1, 1957 [1] Eastern Washington, including Spokane, the Tri-Cities, Yakima, Walla Walla, and Wenatchee Created in a split from area code 206. [2]
360 January 15, 1995 [3] Western Washington excluding most of the Seattle metropolitan area; includes Olympia, Kitsap County, Bellingham, and Vancouver Overlay plan. NPAs 206, 253, and 425 are slated for inclusion in overlay. [4]
564 August 28, 2017 [4]
253 April 27, 1997 [5] Southern Puget Sound region, including Tacoma, most of Pierce County, Auburn, and Federal Way
425 April 27, 1997 [5] Eastside and southern Snohomish County, including Everett, Snoqualmie Pass, and Renton [4]

See also

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Area code 564 is a telephone overlay area code in the North American Numbering Plan (NANP) for Western Washington state, including metropolitan Seattle. The area code was first proposed in 1999 to relieve telephone number shortages in area code 360, but implementation was delayed until 2017, when it was installed for an overlay complex that comprises only the numbering plan area 360. Neighboring area codes 206, 253, and 425 were slated for expansion of the overlay upon exhaustion of central office codes in each NPA. In 2023, area code 206 was approved for expansion with a guide line for preparation of inclusion of at least nine months. Ten-digit dialing has been mandatory in all of western Washington since July 29, 2017.

<span class="mw-page-title-main">Area code 206</span> Telephone area code for Seattle, Washington

Area code 206 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Washington. The numbering plan area (NPA) includes Seattle and most of its innermost suburbs. This includes such suburbs as Shoreline and Lake Forest Park; Mercer, Bainbridge, and Vashon Islands; and portions of metropolitan Seattle from Des Moines to Woodway.

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<span class="mw-page-title-main">Area code 253</span> Telephone area code for parts of Washington state, United States

Area code 253 is a telephone area code in the North American Numbering Plan (NANP) for a part of the U.S. state of Washington. The numbering plan area (NPA) includes the area south of Seattle and the southern Puget Sound area, centered at Tacoma and extending to include the areas around Gig Harbor, Auburn, and Roy. It also serves the western half of Pierce County, as well as southern King County.

<span class="mw-page-title-main">Area code 425</span> Area code in Washington state, United States

Area code 425 is a telephone area code in the North American Numbering Plan (NANP) for the suburbs north and east of Seattle in the U.S. state of Washington. The numbering plan area includes the Eastside, extending east to North Bend, north to Everett, and south to Maple Valley. It also includes the cities of Bellevue and Redmond, both major employment centers. The area code was created in 1997 in a three-way split of area code 206.

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References

  1. Caldwell, Bert (April 27, 2000). "East Side may split area code". The Spokesman-Review . p. A1. Retrieved February 3, 2023 via Newspapers.com.
  2. "New Codes Vital to Phone Users". Spokane Chronicle . April 4, 1962. p. 3. Retrieved February 3, 2023 via Newspapers.com.
  3. Klockow, James (January 15, 1995). "Catching a code: State's 3rd dialing area goes into effect". The News Tribune. pp.  A1, A12 . Retrieved September 24, 2021 via Newspapers.com.
  4. 1 2 3 Brown, Andrea (March 23, 2021). "Meet area code 564: The new kid in town is gaining ground". The Everett Herald . Retrieved September 24, 2021.
  5. 1 2 Flash, Cynthia (April 27, 1997). "Welcome, 253 and 425". The News Tribune . p. A1. Retrieved February 3, 2023 via Newspapers.com.