Area Code 203-600 located in MERIDEN, NEW HAVEN, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 600 City : MERIDEN County : NEW HAVEN State : CT (Connecticut) NXX Use Type : Wireless NXX Intro Version : 10/3/2008 FIPS (Federal Information Processing Standards) : 09009 LATA (Local Access Transport Area) : 920 Rate Center : MERIDEN ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 06450 Other Information NPANXX : 203600 County Population : 0 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 : METRO PCS, INC. OCN (Operating Company Number) : 5562 Coverage Area Name : MERIDEN Latitude : 41.5357 Longitude : -72.8056 ‹ previous : 203-599 next › : 203-601 Telephone Number List 203-600-0000 ~ 203-600-9999