Area code 360

Area code 360 is the telephone area code for western Washington state outside metropolitan Seattle. It began service on January 15, 1995. The numbering plan area (NPA), which encompasses all of western Washington outside urban King, Pierce, and Snohomish counties and Bainbridge Island, was previously part of area code 206. Area codes 360 and 334 (Alabama), which began service on the same day, were the first two area codes in the North American Numbering Plan with a middle digit other than 0 or 1.

The served area consists of two sections. The larger, western portion stretches from the Strait of Juan de Fuca to the Oregon border, while the portion on the east shore of Puget Sound stretches from the border with British Columbia, Canada almost to Everett. This configuration came when residents of several Seattle exurbs protested being moved into 253. In response, US West put some back in 206, a move that hastened the split that put most of Seattle's suburban ring into areas 253 and 425 two years later. It is one of the few areas in NANPA without a continuous land border; others include 706 in Georgia, 423 in Tennessee and 386 in Florida. Each case results from a split that removed the middle from a formerly contiguous area.

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