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Glendale Heights, Illinois Area Code |
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Glendale Heights, IL Area Codes are 331 and 630 |
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Glendale Heights, Illinois is currently assigned two area codes 331 and 630. Glendale Heights, IL utilizes an
area code overlay in which area codes 331 and 630 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary in Glendale Heights because two different homes in the same
geographic area can have the same seven digit phone number but each would have a different area code. The area code overlay which is in use in Glendale Heights, IL today was put into service on October 7,
2007 when area code 331 was created as an overlay of area code 630. Area code 630 was put into service in 1996.
In addition to Glendale Heights, IL area codes 331 and 630 serve the major communities
of Addison, Aurora, Bartlett, Batavia, Bensenville, Bloomingdale, Bolingbrook, Carol Stream, Darien, Downers Grove, Elmhurst, Glen Ellyn, Hanover Park, Lisle, Lombard, Naperville, Roselle, St. Charles,
Streamwood, Villa Park, West Chicago, Westmont, Wheaton and Woodridge. |
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Illinois Area Codes |
217, 224, 309, 312, 331, 618, 630, 708, 773, 779, 815, 847, 872 |
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