| 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 |
|---|---|---|---|
| 734-405 | Wayne | Wayne, MI | Long Distance Of Michigan DBA Ldmi |
| 734-407 | Wayne | Wyandotte, MI | Long Distance Of Michigan DBA Ldmi |
| 734-408 | Washtenaw | Dexter, MI | Phone Michigan |
| 734-413 | Wayne | Romulus, MI | Xo Communications Services |
| 734-414 | Wayne | Plymouth, MI | Ameritech Michigan |
| 734-415 | Wayne | New Boston, MI | Phone Michigan |
| 734-416 | Wayne | Plymouth, MI | Ameritech Michigan |
| 734-417 | Washtenaw | Ann Arbor, MI | Cellco Partnership DBA Verizon Wireless |
| 734-418 | Washtenaw | Ann Arbor, MI | Level 3 Communications |
| 734-419 | Wayne | Detroit, MI | Xo Communications Services |
| 734-420 | Wayne | Plymouth, MI | Ameritech Michigan |
| 734-421 | Wayne | Livonia, MI | Ameritech Michigan |
| 734-422 | Wayne | Livonia, MI | Ameritech Michigan |
| 734-423 | Wayne | Wayne, MI | Allegiance Telecom Of Michigan |
| 734-424 | Washtenaw | Dexter, MI | Ameritech Michigan |
| 734-425 | Wayne | Livonia, MI | Ameritech Michigan |
| 734-426 | Washtenaw | Dexter, MI | Ameritech Michigan |
| 734-427 | Wayne | Livonia, MI | Ameritech Michigan |
| 734-428 | Washtenaw | Manchester, MI | Ameritech Michigan |
| 734-429 | Washtenaw | Saline, MI | Frontier North |
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.