Area Code 310-502 located in SAN PABLO, CONTRA COSTA, CA, more detail is as below. Place NPA (Numbering Plan Area) : 310 NXX (Local Number Prefix) : 502 City : SAN PABLO County : CONTRA COSTA State : CA (California) NXX Use Type : Wireless NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 06013 LATA (Local Access Transport Area) : 730 Rate Center : CMTN GRDN ZIP Code Count : 1 ZIP Code Frequency : 25 ZIP Code : 94806 Other Information NPANXX : 310502 County Population : 0 Switch CLLI (Common Language Location Identifier) : SNANCAPCCM3 MSA CBSA (Core Based Statistical Area) : San Francisco-Oakland-Fremont, CA MSA CBSA Code (Core Based Statistical Area) : 41860 Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA OCN (Operating Company Number) : 6006 Coverage Area Name : LOS ANGELES Latitude : 33.8741 Longitude : -118.2903 ‹ previous : 310-502 next › : 310-502 Telephone Number List 310-502-0000 ~ 310-502-9999