Area code 360

Area code 360 is a telephone area code in the North American Numbering Plan (NANP) for western Washington state outside metropolitan Seattle and west of the Cascade Mountains. Its numbering plan area (NPA) comprises all of western Washington outside urban King, Pierce, and Snohomish counties and Bainbridge Island, Until January 15, 1995, when the area code commenced service, the numbering plan area (NPA) was served by area code 206, Washington's original area code since 1947.

Since 2017, area code 360 has been an overlay area code, from the addition of area code 564 to the same numbering plan area. Area code 564 is slated for overlay onto additional NPAs in the region, when numbering shortages demand relief.