Area Code 262-378 located in MUKWONAGO, WAUKESHA, WI, more detail is as below. Place NPA (Numbering Plan Area) : 262 NXX (Local Number Prefix) : 378 City : MUKWONAGO County : WAUKESHA State : WI (Wisconsin) NXX Use Type : Wireless NXX Intro Version : 2002-02-13 FIPS (Federal Information Processing Standards) : 55133 LATA (Local Access Transport Area) : 356 Rate Center : MUKWONAGO ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 53149 Other Information NPANXX : 262378 County Population : 0 Switch CLLI (Common Language Location Identifier) : NWBLWIAACM2 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 : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : MUKWONAGO Latitude : 42.8688 Longitude : -88.3349 ‹ previous : 262-377 next › : 262-379 Telephone Number List 262-378-0000 ~ 262-378-9999