Area Code 203-660 located in RIVERSIDE, FAIRFIELD, CT, more detail is as below. Place NPA (Numbering Plan Area) : 203 NXX (Local Number Prefix) : 660 City : RIVERSIDE County : FAIRFIELD State : CT (Connecticut) NXX Use Type : Landline NXX Intro Version : 2001-06-30 FIPS (Federal Information Processing Standards) : 09001 LATA (Local Access Transport Area) : 132 Rate Center : BYRAM ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 06878 Other Information NPANXX : 203660 County Population : 0 Switch CLLI (Common Language Location Identifier) : NYCMNYZR00E 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 : GLOBAL CROSSING LOCAL SERVICES, INC.-CT OCN (Operating Company Number) : 3493 Coverage Area Name : GREENWICH Latitude : 41.0152 Longitude : -73.6508 ‹ previous : 203-659 next › : 203-660 Telephone Number List 203-660-0000 ~ 203-660-9999