Area Code 815

815 is the North American Telephone Area Code For Illinois in United States.
District of Illinois area codes: 815
Country United States
State/Province Illinois
Major City Chicago
Time Zone Central

Phone directory with area code 815

Prefix County Primary City Company
815-200 La Salle La Salle, IL Paetec Communications
815-201 Winnebago Rockford, IL Clec
815-202 La Salle Oglesby, IL New Cingular Wireless PCS
815-203 Will Joliet, IL Usa Mobility Wireless
815-204 Mchenry Crystal Lake, IL Usa Mobility Wireless
815-205 Cook La Grange Park, IL Centurylink Communications LLC
815-206 Mchenry Woodstock, IL Ameritech Illinois
815-207 Will Joliet, IL AT&T Local
815-208 Whiteside Fulton, IL Mediacom Telephony Of Illinois
815-209 Winnebago Rockford, IL Level 3 Communications
815-210 Will Joliet, IL New Cingular Wireless PCS
815-212 Will Joliet, IL T-mobile Usa
815-213 Whiteside Sterling, IL United States Cellular Corp. - Illinois
815-214 Kankakee Kankakee, IL Rcn Telecom Services Of Illinois
815-215 Will New Lenox, IL First Communications LLC
815-216 Kankakee Kankakee, IL Cellco Partnership DBA Verizon Wireless
815-217 Dekalb Dekalb, IL Digital Network Access Communications
815-218 Winnebago Rockford, IL Cellco Partnership DBA Verizon Wireless
815-219 Mchenry Crystal Lake, IL Sprint Spectrum L.p.
815-220 La Salle La Salle, IL Ameritech Illinois
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There are 785 prefixes, In the code area, the major cities are Belvidere, IL;Crystal Lake, IL;De Kalb, IL;Freepor. The major city is Chicago.

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