Area Code 773-260 located in CHICAGO, COOK, IL, more detail is as below. Place NPA (Numbering Plan Area) : 773 NXX (Local Number Prefix) : 260 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 : CHICGOZN10 ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 60643 Other Information NPANXX : 773260 Switch CLLI (Common Language Location Identifier) : CHCGILPUCG0 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 : 41.6877 Longitude : -87.6305 ‹ previous : 773-260 next › : 773-261 Telephone Number List 773-260-0000 ~ 773-260-9999