Area Code 203-919 located in NORWALK, FAIRFIELD, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 919 City : NORWALK County : FAIRFIELD State : CT (Connecticut) NXX Use Type : Wireless NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 09001 LATA (Local Access Transport Area) : 920 Rate Center : NORWALK ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 06850 Other Information NPANXX : 203919 County Population : 0 Switch CLLI (Common Language Location Identifier) : SMFRCT0164Z 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 : OMNIPOINT COMMUNICATIONS, INC. - CT OCN (Operating Company Number) : 6624 Coverage Area Name : NORWALK Latitude : 41.1003 Longitude : -73.4187 ‹ previous : 203-918 next › : 203-919 Telephone Number List 203-919-0000 ~ 203-919-9999