Area Code 773-256 located in CHICAGO, COOK, IL, more detail is as below. Place NPA (Numbering Plan Area) : 773 NXX (Local Number Prefix) : 256 City : CHICAGO County : COOK State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1996-10-15 FIPS (Federal Information Processing Standards) : 17031 LATA (Local Access Transport Area) : 358 Rate Center : CHICGOZN07 ZIP Code Count : 281 ZIP Code Frequency : 44 ZIP Code : 60637 Other Information NPANXX : 773256 Switch CLLI (Common Language Location Identifier) : CHCGILDODS0 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 : AMERITECH ILLINOIS OCN (Operating Company Number) : 9329 Coverage Area Name : CHICAGO Latitude : 41.7841 Longitude : -87.5967 ‹ previous : 773-256 next › : 773-257 Telephone Number List 773-256-0000 ~ 773-256-9999
