Area Code 830-602 located in CRYSTAL CITY, ZAVALA, TX, more detail is as below. Place NPA (Numbering Plan Area) : 830 NXX (Local Number Prefix) : 602 City : CRYSTAL CITY County : ZAVALA State : TX (Texas) NXX Use Type : Landline NXX Intro Version : 7/12/2006 FIPS (Federal Information Processing Standards) : 48507 LATA (Local Access Transport Area) : 566 Rate Center : CRYSTAL CY ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 78839 Other Information NPANXX : 830602 Switch CLLI (Common Language Location Identifier) : SNANTX81XFY Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : NWIRE, LLC - TX OCN (Operating Company Number) : 129G Coverage Area Name : CRYSTAL CITY Latitude : 28.6813 Longitude : -99.8274 ‹ previous : 830-600 next › : 830-606 Telephone Number List 830-602-0000 ~ 830-602-9999