Area Code 925-203 located in PITTSBURG, CONTRA COSTA, CA, more detail is as below. Place NPA (Numbering Plan Area) : 925 NXX (Local Number Prefix) : 203 City : PITTSBURG County : CONTRA COSTA State : CA (California) NXX Use Type : Wireless NXX Intro Version : 2002-08-04 FIPS (Federal Information Processing Standards) : 06013 LATA (Local Access Transport Area) : 722 Rate Center : PITTSBURG ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 94565 Other Information NPANXX : 925203 Switch CLLI (Common Language Location Identifier) : CNCRCADOCM5 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 : NEW CINGULAR WIRELESS PCS, LLC OCN (Operating Company Number) : 6010 Coverage Area Name : PITTSBURG Latitude : 38.0228 Longitude : -121.8837 ‹ previous : 925-202 next › : 925-204 Telephone Number List 925-203-0000 ~ 925-203-9999