Area Code Profile
Area Code 331 Prefixes & Exchanges
Serving Aurora, Illinois, Unites States
Central Office Exchanges (Prefixes)
Select any prefix below to view phone lines, carrier networks, and consumer reports in that exchange:
| Exchange Prefix | City / Location | Line Type |
|---|---|---|
| 1-331-201-#### | Downers Grove | Wireless |
| 1-331-202-#### | Elmhurst | Wireless |
| 1-331-203-#### | Aurora | Wireless |
| 1-331-204-#### | Bartlett | Landline |
| 1-331-205-#### | Aurora | Wireless |
| 1-331-206-#### | Aurora | Wireless |
| 1-331-207-#### | Yorkville | Landline |
| 1-331-208-#### | Aurora | Wireless |
| 1-331-209-#### | Elmhurst | Wireless |
| 1-331-210-#### | Saint Charles | Landline |
| 1-331-212-#### | Aurora | Landline |
| 1-331-213-#### | Naperville | Wireless |
| 1-331-214-#### | Downers Grove | Wireless |
| 1-331-215-#### | Naperville | Wireless |
| 1-331-216-#### | Oswego | Wireless |
| 1-331-218-#### | Wheaton | Wireless |
| 1-331-220-#### | Aurora | Wireless |
| 1-331-221-#### | Elmhurst | Landline |
| 1-331-222-#### | Saint Charles | Wireless |
| 1-331-223-#### | Saint Charles | Wireless |
| 1-331-225-#### | Elmhurst | Wireless |
| 1-331-228-#### | Saint Charles | Wireless |
| 1-331-229-#### | Naperville | Wireless |
| 1-331-234-#### | Sugar Grove | Wireless |
| 1-331-240-#### | West Chicago | Landline |
| 1-331-245-#### | Bartlett | Wireless |
| 1-331-248-#### | Geneva | Landline |
| 1-331-250-#### | Aurora | Wireless |
| 1-331-251-#### | Downers Grove | Wireless |
| 1-331-254-#### | Unknown | |
| 1-331-256-#### | Aurora | Wireless |
| 1-331-262-#### | Aurora | Wireless |
| 1-331-281-#### | Naperville | Landline |
| 1-331-301-#### | Aurora | Landline |
| 1-331-302-#### | Aurora | Wireless |
| 1-331-303-#### | Elburn | Landline |
| 1-331-305-#### | Naperville | Wireless |
| 1-331-318-#### | Lemont | Landline |
| 1-331-330-#### | Oswego | Landline |
| 1-331-332-#### | Naperville | Wireless |
| 1-331-333-#### | Naperville | Wireless |
| 1-331-422-#### | Saint Charles | Landline |
| 1-331-425-#### | Aurora | Wireless |
| 1-331-431-#### | Aurora | Wireless |
| 1-331-442-#### | Saint Charles | Wireless |
| 1-331-444-#### | Naperville | Landline |
| 1-331-452-#### | Aurora | Wireless |
| 1-331-454-#### | Aurora | Wireless |
| 1-331-456-#### | Roselle | Landline |
| 1-331-457-#### | Naperville | Wireless |
| 1-331-462-#### | Lombard | Landline |
| 1-331-465-#### | West Chicago | Wireless |
| 1-331-472-#### | Naperville | Wireless |
| 1-331-481-#### | Downers Grove | Wireless |
| 1-331-551-#### | Lombard | Wireless |
| 1-331-575-#### | Aurora | Wireless |
| 1-331-588-#### | Saint Charles | Wireless |
| 1-331-625-#### | Downers Grove | Wireless |
| 1-331-642-#### | Elmhurst | Wireless |
| 1-331-643-#### | Aurora | Wireless |
| 1-331-645-#### | Elmhurst | Wireless |
| 1-331-684-#### | Aurora | Landline |
| 1-331-702-#### | Naperville | Landline |
| 1-331-703-#### | West Chicago | Wireless |
| 1-331-725-#### | Oswego | Landline |
| 1-331-777-#### | Downers Grove | Landline |
| 1-331-801-#### | Unknown | |
| 1-331-803-#### | Lemont | Landline |
| 1-331-825-#### | Unknown | |
| 1-331-826-#### | Elmhurst | Wireless |
| 1-331-888-#### | Warrenville | Landline |
| 1-331-903-#### | Unknown | |
| 1-331-999-#### | Oswego | Landline |
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About Area Code 331
Area code 331 is assigned to the geographic numbering plan serving Aurora, Illinois.
Use the directory table to navigate through central office prefixes and explore individual telephone lines.