List of Area Codes in Illinois | ||
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217 Area Code | 224 Area Code | 309 Area Code |
312 Area Code | 773 Area Code | 847 Area Code |
872 Area Code |
County List of Area Code 331 | ||
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DuPage Area code | Kane Area code | Cook Area code |
Will Area code | Kendall Area code |
County List of Area Code 630 | ||
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DuPage Area code | Kane Area code | Cook Area code |
Will Area code | Kendall Area code |
County List of Area Code 708 | ||
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Cook Area code | DuPage Area code | Will Area code |