Located in the Pacific (GMT -08:00) time zone. Area code 360 serves the state of Washington. This area code was assigned on January 21st, 1994. On January 15th, 1995 it went into service. 360 is a General Purpose Code. 360 service area does overlap with 564 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.