Area Code 224-306 located in DEERFIELD, LAKE, IL, more detail is as below. Place NPA (Numbering Plan Area) : 224 NXX (Local Number Prefix) : 306 City : DEERFIELD County : LAKE State : IL (Illinois) NXX Use Type : Wireless NXX Intro Version : 2003-08-31 FIPS (Federal Information Processing Standards) : 17097 LATA (Local Access Transport Area) : 358 Rate Center : NORTHBROOK ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 60015 Other Information NPANXX : 224306 County Population : 0 Switch CLLI (Common Language Location Identifier) : LBRDILDGCM4 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 Overlay : L Company : UNITED STATES CELLULAR CORP. - ILLINOIS OCN (Operating Company Number) : 6265 Coverage Area Name : NORTHBROOK Latitude : 42.1286 Longitude : -87.8310 ‹ previous : 224-305 next › : 224-306 Telephone Number List 224-306-0000 ~ 224-306-9999