Area Code 602-203 located in PHOENIX, MARICOPA, AZ, more detail is as below. Place NPA (Numbering Plan Area) : 602 NXX (Local Number Prefix) : 203 City : PHOENIX County : MARICOPA State : AZ (Arizona) NXX Use Type : Wireless NXX Intro Version : 2003-11-11 FIPS (Federal Information Processing Standards) : 04013 LATA (Local Access Transport Area) : 666 Rate Center : PHOENIX ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 85016 Other Information NPANXX : 602203 County Population : 0 Switch CLLI (Common Language Location Identifier) : PHNAAZIADS1 MSA CBSA (Core Based Statistical Area) : Phoenix-Mesa-Glendale, AZ MSA CBSA Code (Core Based Statistical Area) : 38060 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : No Company : AMERICAN MESSAGING SERVICES, LLC OCN (Operating Company Number) : 6906 Coverage Area Name : PHOENIX Latitude : 33.5443 Longitude : -112.0485 ‹ previous : 602-202 next › : 602-203 Telephone Number List 602-203-0000 ~ 602-203-9999