Area Code 203-934 located in WEST HAVEN, NEW HAVEN, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 934 City : WEST HAVEN County : NEW HAVEN State : CT (Connecticut) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 09009 LATA (Local Access Transport Area) : 920 Rate Center : NEW HAVEN ZIP Code Count : 4010 ZIP Code Frequency : 99 ZIP Code : 06516 Other Information NPANXX : 203934 County Population : 0 Switch CLLI (Common Language Location Identifier) : WSHNCT00DS0 MSA CBSA (Core Based Statistical Area) : New Haven-Milford, CT MSA CBSA Code (Core Based Statistical Area) : 35300 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : SOUTHERN NEW ENGLAND TELEPHONE CO. OCN (Operating Company Number) : 9147 Coverage Area Name : NEW HAVEN Latitude : 41.2698 Longitude : -72.9439 ‹ previous : 203-933 next › : 203-935 Telephone Number List 203-934-0000 ~ 203-934-9999