Area Code (312)

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Cities in Area Code 312

Addison, Bensenville, Bridgeview, Buffalo Grove, Burr Ridge, Chicago, Elgin, Elk Grove, Elk Grove Village, Elmhurst, Hammond, Hickory Hills, Lombard, Mt Prospect, Naperville, Oak Brook, Schaumburg, Wheeling, Wood Dale
Metropolitan Statisitical Areas in Area Code 312

Chicago, Naperville, Joliet
Counties in Area Code 312

Cook, DuPage
States / Provinces

Illinois

*Approximate area serviced by the 312 area code

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Recently Searched Telephone Exchanges in the 312 Area Code

312-218-0000, 312-224-0000, 312-233-0000, 312-286-0000, 312-291-0000, 312-355-0000, 312-418-0000, 312-521-0000, 312-540-0000, 312-578-0000, 312-590-0000, 312-619-0000, 312-676-0000, 312-706-0000, 312-712-0000, 312-777-0000, 312-793-0000, 312-837-0000, 312-848-0000, 312-849-0000, 312-906-0000, 312-943-0000, 312-961-0000, 312-985-0000, 312-990-0000