Area Code 830-203 located in GONZALES, GONZALES, TX, more detail is as below. Place NPA (Numbering Plan Area) : 830 NXX (Local Number Prefix) : 203 City : GONZALES County : GONZALES State : TX (Texas) NXX Use Type : Wireless NXX Intro Version : 2003-11-11 FIPS (Federal Information Processing Standards) : 48177 LATA (Local Access Transport Area) : 566 Rate Center : GONZALES ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 78629 Other Information NPANXX : 830203 Switch CLLI (Common Language Location Identifier) : SNANTXCAX6Z Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : GONZALES Latitude : 29.5065 Longitude : -97.4492 ‹ previous : 830-202 next › : 830-204 Telephone Number List 830-203-0000 ~ 830-203-9999