Area Code 224-366 located in MOUNT PROSPECT, COOK, IL, more detail is as below. Place NPA (Numbering Plan Area) : 224 NXX (Local Number Prefix) : 366 City : MOUNT PROSPECT County : COOK State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 2005-06-25 FIPS (Federal Information Processing Standards) : 17031 LATA (Local Access Transport Area) : 358 Rate Center : ELK GROVE ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 60056 Other Information NPANXX : 224366 County Population : 0 Switch CLLI (Common Language Location Identifier) : CHCGILABDS0 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 : BROADWING COMMUNICATIONS, LLC - IL OCN (Operating Company Number) : 7721 Coverage Area Name : ELK GROVE VILLAGE Latitude : 42.0282 Longitude : -87.9872 ‹ previous : 224-365 next › : 224-366 Telephone Number List 224-366-0000 ~ 224-366-9999