Area code 206

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Numbering plan areas of Washington, with 206 highlighted in red.

Area code 206 is a North American telephone area code in the U.S. state of Washington assigned to the numbering plan area (NPA) that includes the city of Seattle, Shoreline, Lake Forest Park, the islands of Mercer, Bainbridge, and Vashon, and portions of metropolitan Seattle from Des Moines to Woodway.

This numbering plan area is one of the few urbanized areas in the North American Numbering Plan without a code overlay, meaning telephone calls within Seattle may still be originated by seven-digit dialing. The area code 564 overlay will be activated on January 28th 2017, with ten-digit dialing required by mid year.[1]

History

Area code 206 was one of the original area codes assigned in 1947. The original numbering plan area was the entire state of Washington. On January 1, 1957, area code 509 was assigned for the eastern two-thirds of the state in a flash-cut, with the split roughly following the Cascade Mountains.citation needed On January 15, 1995, most of the old 206 territory outside of the Seattle-Tacoma area split off with area code 360, which was one of the first two area codes not conforming to the N0X/N1X format.[2]

Numerous residents in the Seattle exurbs objected to no longer being associated with 206, leading US West, now part of CenturyLink, to reintegrate those areas shortly after the split. However, 206 was already close to exhaustion even after the 1995 split from the proliferation of cell phones and pagers.citation needed As part of the plan, the cities of Des Moines and Woodway were both split between the new area codes due to capacity at switching centers.[3] This hastened a three-way split of the 206 territory, effective on April 25, 1997. The southern portion, including Tacoma, received area code 253, while the northern portion was assigned area code 425.[4][5]

See also

References

  1. ^ "New area code coming to western Washington" (Press release). Washington Utilities and Transportation Commission. May 19, 2016. Retrieved May 19, 2016. 
  2. ^ Buck, Richard (January 27, 1995). "Some not quite on line with 360 area code". The Seattle Times. p. D1. Retrieved June 21, 2017. 
  3. ^ Brooks, Diane (November 14, 1997). "Mayor's call splits up Woodway". The Seattle Times. p. A26. Retrieved June 21, 2017. 
  4. ^ "New area codes coming: Thank your fax, modem". The Seattle Times. July 9, 1996. p. A1. 
  5. ^ Lewis, Peter (April 3, 1997). "7-digit phone number no longer enough". The Seattle Times. p. A1. Retrieved June 21, 2017. 
Washington area codes: 206, 253, 360, 425, 509, 564
North: 360, 425
West: 360 Area Code 206 East: 425
South: 253

Coordinates: 47°37′9.37″N 122°20′28.38″W / 47.6192694°N 122.3412167°W / 47.6192694; -122.3412167


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