Area Code 414-203 located in MILWAUKEE, MILWAUKEE, WI, more detail is as below. Place NPA (Numbering Plan Area) : 414 NXX (Local Number Prefix) : 203 City : MILWAUKEE County : MILWAUKEE State : WI (Wisconsin) NXX Use Type : Landline NXX Intro Version : 1996-01-10 FIPS (Federal Information Processing Standards) : 55079 LATA (Local Access Transport Area) : 356 Rate Center : MILWAUKZN1 ZIP Code Count : 2 ZIP Code Frequency : 40 ZIP Code : 53204 Other Information NPANXX : 414203 Switch CLLI (Common Language Location Identifier) : MILXWIILDS0 MSA CBSA (Core Based Statistical Area) : Milwaukee-Waukesha-West Allis, WI MSA CBSA Code (Core Based Statistical Area) : 33340 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MCIMETRO ACCESS TRANSMISSION SERVICES LLC OCN (Operating Company Number) : 7229 Coverage Area Name : MILWAUKEE Latitude : 43.0422 Longitude : -87.9068 ‹ previous : 414-202 next › : 414-203 Telephone Number List 414-203-0000 ~ 414-203-9999