| District of Michigan area codes: 734 | |
|---|---|
| Country | United States |
| State/Province | Michigan |
| Major City | Detroit |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 734-678 | Washtenaw | Ann Arbor, MI | Sprint Spectrum L.p. |
| 734-679 | Wayne | Livonia, MI | Cellco Partnership DBA Verizon Wireless |
| 734-680 | Washtenaw | Ann Arbor, MI | Metro PCS |
| 734-681 | Washtenaw | Milan, MI | Global Crossing Telemanagement-mi |
| 734-682 | Monroe | Monroe, MI | Global Crossing Telemanagement-mi |
| 734-686 | Washtenaw | Ann Arbor, MI | Acd Telecom |
| 734-687 | Monroe | Monroe, MI | Telnet Worldwide |
| 734-688 | Livingston | Pinckney, MI | Phone Michigan |
| 734-689 | Washtenaw | Whitmore Lake, MI | Phone Michigan |
| 734-692 | Wayne | Trenton, MI | Ameritech Michigan |
| 734-693 | Monroe | Monroe, MI | New Cingular Wireless PCS - IL |
| 734-694 | Washtenaw | Whitmore Lake, MI | Global Crossing Telemanagement-mi |
| 734-695 | Washtenaw | Ypsilanti, MI | Ameritech Michigan |
| 734-697 | Wayne | Belleville, MI | Ameritech Michigan |
| 734-699 | Wayne | Belleville, MI | Ameritech Michigan |
| 734-702 | Washtenaw | Whitmore Lake, MI | Centurylink Communications LLC |
| 734-707 | Washtenaw | Ann Arbor, MI | Onvoy |
| 734-708 | Monroe | Maybee, MI | Ymax Communications Corp. |
| 734-709 | Washtenaw | Ann Arbor, MI | Omnipoint Communications Midwest Operations LLC |
| 734-710 | Wayne | Plymouth, MI | Tds Metrocom Inc. |
There are 608 prefixes, In the code area, the major cities are Ann Arbor, MI;Canton, MI;Garden City, MI;Livonia, . The major city is Detroit.