| 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 |
|---|---|---|---|
| 734-289 | Monroe | Monroe, MI | Ameritech Michigan |
| 734-293 | Wayne | Detroit, MI | Allegiance Telecom Of Michigan |
| 734-294 | Washtenaw | Ann Arbor, MI | American Messaging (am) |
| 734-295 | Washtenaw | Saline, MI | Frontier North |
| 734-296 | Wayne | Livonia, MI | American Messaging (am) |
| 734-297 | Monroe | Monroe, MI | American Messaging (am) |
| 734-298 | Wayne | Wayne, MI | Telnet Worldwide |
| 734-299 | Monroe | Carleton, MI | Broadwing Communications |
| 734-301 | Wayne | Trenton, MI | Sprint Spectrum L.p. |
| 734-302 | Washtenaw | Ann Arbor, MI | Ameritech Michigan |
| 734-303 | Wayne | New Boston, MI | Cellco Partnership DBA Verizon Wireless |
| 734-304 | Mci Worldcom Communications | ||
| 734-305 | Monroe | Monroe, MI | American Messaging (am) |
| 734-306 | Wayne | Wayne, MI | Sprint Spectrum L.p. |
| 734-307 | Wayne | Trenton, MI | Cbeyond Communications |
| 734-308 | Wayne | Wyandotte, MI | Cellco Partnership DBA Verizon Wireless |
| 734-309 | Wayne | Wyandotte, MI | Cellco Partnership DBA Verizon Wireless |
| 734-310 | Monroe | Dundee, MI | Telnet Worldwide |
| 734-312 | Washtenaw | Dexter, MI | Cellco Partnership DBA Verizon Wireless |
| 734-314 | Livingston | Gregory, MI | Telnet Worldwide |
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.