Area Code 203-349 located in NEW HAVEN, NEW HAVEN, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 349 City : NEW HAVEN County : NEW HAVEN State : CT (Connecticut) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 09009 LATA (Local Access Transport Area) : 920 Rate Center : WESTPORT ZIP Code Count : 1 ZIP Code Frequency : 33 ZIP Code : 06511 Other Information NPANXX : 203349 County Population : 0 Switch CLLI (Common Language Location Identifier) : HRFRCTCRDS0 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 : TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT OCN (Operating Company Number) : 7143 Coverage Area Name : WESTPORT Latitude : 41.1390 Longitude : -73.3560 ‹ previous : 203-348 next › : 203-349 Telephone Number List 203-349-0000 ~ 203-349-9999