Area Code 203-537 located in STAMFORD, FAIRFIELD, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 537 City : STAMFORD County : FAIRFIELD State : CT (Connecticut) NXX Use Type : Wireless NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 09001 LATA (Local Access Transport Area) : 920 Rate Center : MERIDEN ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 06905 Other Information NPANXX : 203537 County Population : 0 Switch CLLI (Common Language Location Identifier) : NWHNCT02Y7X MSA CBSA (Core Based Statistical Area) : Bridgeport-Stamford-Norwalk, CT MSA CBSA Code (Core Based Statistical Area) : 14860 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : MERIDEN Latitude : 41.5357 Longitude : -72.8056 ‹ previous : 203-536 next › : 203-538 Telephone Number List 203-537-0000 ~ 203-537-9999