Area Code 779-206 located in JOLIET, WILL, IL, more detail is as below. Place NPA (Numbering Plan Area) : 779 NXX (Local Number Prefix) : 206 City : JOLIET County : WILL State : IL (Illinois) NXX Use Type : Wireless NXX Intro Version : 6/20/2012 FIPS (Federal Information Processing Standards) : 17197 LATA (Local Access Transport Area) : 358 Rate Center : JOLIET ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 60433 Other Information NPANXX : 779206 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 : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL OCN (Operating Company Number) : 6333 Coverage Area Name : JOLIET Latitude : 41.5279 Longitude : -88.0822 ‹ previous : 779-205 next › : 779-207 Telephone Number List 779-206-0000 ~ 779-206-9999