Area Code 872-203 located in CHICAGO, COOK, IL, more detail is as below. Place NPA (Numbering Plan Area) : 872 NXX (Local Number Prefix) : 203 City : CHICAGO County : COOK State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 2/10/2012 FIPS (Federal Information Processing Standards) : 17031 LATA (Local Access Transport Area) : 358 Rate Center : CHICGOZN02 ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 60603 Other Information NPANXX : 872203 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 : BANDWIDTH.COM CLEC, LLC - IL OCN (Operating Company Number) : 984E Coverage Area Name : CHICAGO Latitude : 41.8755 Longitude : -87.6290 ‹ previous : 872-202 next › : 872-205 Telephone Number List 872-203-0000 ~ 872-203-9999