Area Code 331

331 is the North American Telephone Area Code For Illinois in United States.
District of Illinois area codes: 331
Country United States
State/Province Illinois
Major City Lemont
Time Zone Central

Phone directory with area code 331

Prefix County Primary City Company
331-200 Cook Bartlett, IL T-mobile Usa
331-201 Dupage Downers Grove, IL Cellco Partnership DBA Verizon Wireless
331-202 Dupage Elmhurst, IL Sprint Spectrum L.p.
331-203 Kane Aurora, IL Sprint Spectrum L.p.
331-204 Cook Bartlett, IL Broadvox-clec
331-205 Kane Aurora, IL T-mobile Usa
331-206 Kane Aurora, IL Sprint Spectrum L.p.
331-207 Kendall Yorkville, IL Level 3 Communications
331-208 Kane Aurora, IL Sprint Spectrum L.p.
331-209 Dupage Elmhurst, IL Level 3 Communications
331-210 Kane Saint Charles, IL Peerless Network Of Illinois
331-212 Kane Aurora, IL Mci Worldcom Communications
331-213 Dupage Naperville, IL Cellco Partnership DBA Verizon Wireless
331-214 Dupage Downers Grove, IL Cellco Partnership DBA Verizon Wireless
331-215 Dupage Naperville, IL Cellco Partnership DBA Verizon Wireless
331-216 Kendall Oswego, IL New Cingular Wireless PCS
331-218 Dupage Wheaton, IL T-mobile Usa
331-220 Kane Aurora, IL Sprint Spectrum L.p.
331-221 Dupage Elmhurst, IL Ameritech Illinois
331-222 Kane Saint Charles, IL Cricket Communications
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There are 75 prefixes, In the code area, the major cities are Addison, IL;Aurora, IL;Bartlett, IL;Batavia, IL;Be. The major city is Lemont.

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