Area Code 773-250 located in LIBERTYVILLE, LAKE, IL, more detail is as below. Place NPA (Numbering Plan Area) : 773 NXX (Local Number Prefix) : 250 City : LIBERTYVILLE County : LAKE State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1998-05-18 FIPS (Federal Information Processing Standards) : 17097 LATA (Local Access Transport Area) : 358 Rate Center : CHICGOZN02 ZIP Code Count : 1 ZIP Code Frequency : 25 ZIP Code : 60048 Other Information NPANXX : 773250 Switch CLLI (Common Language Location Identifier) : CHCGILWJDS0 MSA CBSA (Core Based Statistical Area) : Chicago-Naperville-Joliet, IL-IN-WI MSA CBSA Code (Core Based Statistical Area) : 16980 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 : CHICAGO Latitude : 41.8758 Longitude : -87.6427 ‹ previous : 773-250 next › : 773-251 Telephone Number List 773-250-0000 ~ 773-250-9999