Area Code 206-304 located in SEATTLE, KING, WA, more detail is as below. Place NPA (Numbering Plan Area) : 206 NXX (Local Number Prefix) : 304 City : SEATTLE County : KING State : WA (Washington) NXX Use Type : Wireless NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 53033 LATA (Local Access Transport Area) : 674 Rate Center : DES MOINES ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 98148 Other Information NPANXX : 206304 County Population : 0 Switch CLLI (Common Language Location Identifier) : TACNWADNCM5 MSA CBSA (Core Based Statistical Area) : Seattle-Tacoma-Bellevue, WA MSA CBSA Code (Core Based Statistical Area) : 42660 Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC OCN (Operating Company Number) : 6010 Coverage Area Name : DES MOINES Latitude : 47.4006 Longitude : -122.3258 ‹ previous : 206-303 next › : 206-306 Telephone Number List 206-304-0000 ~ 206-304-9999