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847 has a wide range here but in the NW suburbs...could use some input here ladies? We change many from 708 to 847. Towns like Arlington Heights but it can be on the other side of O'Hare also.

Ah, here we go:

Thing that concerns me and gave me a connect-the-dots brainfart is O'Hare is 847...so people someone please compare the arae code to a major airport also
Area Codes January 6, 2004

Found 103 zip codes
Zip Code City State County AreaCode Time Zone

60102 Algonquin IL Mchenry 847 Central
60002 Antioch IL Lake 847 Central
60004 Arlington Heights IL Cook 847 Central
60005 Arlington Heights IL Cook 847 Central
60006 Arlington Heights IL Cook 847 Central
60010 Barrington IL Lake 847 Central
60011 Barrington IL Lake 847 Central
60089 Buffalo Grove IL Lake 847 Central
60109 Burlington IL Kane 847 Central
60122 Carol Stream IL Kane 847 Central
60110 Carpentersville IL Kane 847 Central
60013 Cary IL Mchenry 847 Central
60015 Deerfield IL Lake 847 Central
60016 Des Plaines IL Cook 847 Central
60017 Des Plaines IL Cook 847 Central
60018 Des Plaines IL Cook 847 Central
60019 Des Plaines IL Cook 847 Central
60118 Dundee IL Kane 847 Central
60120 Elgin IL Kane 847 Central
60121 Elgin IL Kane 847 Central
60123 Elgin IL Kane 847 Central
60007 Elk Grove Village IL Cook 847 Central
60009 Elk Grove Village IL Cook 847 Central
60204 Evanston IL Cook 847 Central
60201 Evanston IL Cook 847 Central
60202 Evanston IL Cook 847 Central
60203 Evanston IL Cook 847 Central
60208 Evanston IL Cook 847 Central
60209 Evanston IL Cook 847 Central
60037 Fort Sheridan IL Lake 847 Central
60020 Fox Lake IL Lake 847 Central
60021 Fox River Grove IL Mchenry 847 Central
60131 Franklin Park IL Cook 847 Central
60136 Gilberts IL Kane 847 Central
60022 Glencoe IL Cook 847 Central
60025 Glenview IL Cook 847 Central
60026 Glenview Nas IL Cook 847 Central
60029 Golf IL Cook 847 Central
60030 Grayslake IL Lake 847 Central
60088 Great Lakes IL Lake 847 Central
60031 Gurnee IL Lake 847 Central
60140 Hampshire IL Kane 847 Central
60035 Highland Park IL Lake 847 Central
60040 Highwood IL Lake 847 Central
60179 Hoffman Estates IL Cook 847 Central
60142 Huntley IL Mchenry 847 Central
60041 Ingleside IL Lake 847 Central
60042 Island Lake IL Lake 847 Central
60043 Kenilworth IL Cook 847 Central
60044 Lake Bluff IL Lake 847 Central
60045 Lake Forest IL Lake 847 Central
60156 Lake In The Hills IL Mchenry 847 Central
60046 Lake Villa IL Lake 847 Central
60047 Lake Zurich IL Lake 847 Central
60048 Libertyville IL Lake 847 Central
60092 Libertyville IL Lake 847 Central
60069 Lincolnshire IL Lake 847 Central
60049 Long Grove IL Lake 847 Central
60053 Morton Grove IL Cook 847 Central
60056 Mount Prospect IL Cook 847 Central
60060 Mundelein IL Lake 847 Central
60714 Niles IL Cook 847 Central
60086 North Chicago IL Lake 847 Central
60064 North Chicago IL Lake 847 Central
60062 Northbrook IL Cook 847 Central
60065 Northbrook IL Cook 847 Central
60038 Palatine IL Cook 847 Central
60055 Palatine IL Cook 847 Central
60067 Palatine IL Cook 847 Central
60074 Palatine IL Cook 847 Central
60078 Palatine IL Cook 847 Central
60094 Palatine IL Cook 847 Central
60095 Palatine IL Cook 847 Central
60068 Park Ridge IL Cook 847 Central
60170 Plato Center IL Kane 847 Central
60070 Prospect Heights IL Cook 847 Central
60008 Rolling Meadows IL Cook 847 Central
60073 Round Lake IL Lake 847 Central
60075 Russell IL Lake 847 Central
60159 Schaumburg IL Cook 847 Central
60168 Schaumburg IL Cook 847 Central
60173 Schaumburg IL Cook 847 Central
60192 Schaumburg IL Cook 847 Central
60193 Schaumburg IL Cook 847 Central
60194 Schaumburg IL Cook 847 Central
60195 Schaumburg IL Cook 847 Central
60196 Schaumburg IL Cook 847 Central
60176 Schiller Park IL Cook 847 Central
60076 Skokie IL Cook 847 Central
60077 Skokie IL Cook 847 Central
60177 South Elgin IL Kane 847 Central
60082 Techny IL Cook 847 Central
60061 Vernon Hills IL Lake 847 Central
60083 Wadsworth IL Lake 847 Central
60084 Wauconda IL Lake 847 Central
60085 Waukegan IL Lake 847 Central
60087 Waukegan IL Lake 847 Central
60079 Waukegan IL Lake 847 Central
60090 Wheeling IL Cook 847 Central
60091 Wilmette IL Cook 847 Central
60093 Winnetka IL Cook 847 Central
60096 Winthrop Harbor IL Lake 847 Central
60099 Zion IL Lake 847 Central