Area Code 203-435 located in HAMDEN, NEW HAVEN, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 435 City : HAMDEN County : NEW HAVEN State : CT (Connecticut) NXX Use Type : Wireless NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 09009 LATA (Local Access Transport Area) : 920 Rate Center : NEW HAVEN ZIP Code Count : 1 ZIP Code Frequency : 50 ZIP Code : 06514 Other Information NPANXX : 203435 County Population : 0 Switch CLLI (Common Language Location Identifier) : BLFDCTAPCM0 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 : OMNIPOINT COMMUNICATIONS, INC. - CT OCN (Operating Company Number) : 6624 Coverage Area Name : NEW HAVEN Latitude : 41.3042 Longitude : -72.9236 ‹ previous : 203-434 next › : 203-435 Telephone Number List 203-435-0000 ~ 203-435-9999