Area Code 530-340 located in MONTAGUE, SISKIYOU, CA, more detail is as below. Place NPA (Numbering Plan Area) : 530 NXX (Local Number Prefix) : 340 City : MONTAGUE County : SISKIYOU State : CA (California) NXX Use Type : Wireless NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 06093 LATA (Local Access Transport Area) : 724 Rate Center : YREKA ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 96064 Other Information NPANXX : 530340 County Population : 0 Switch CLLI (Common Language Location Identifier) : YREKCACJ0MD 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 : YREKA Latitude : 41.7339 Longitude : -122.6306 ‹ previous : 530-339 next › : 530-340 Telephone Number List 530-340-0000 ~ 530-340-9999