| 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 |
|---|---|---|---|
| 734-336 | Washtenaw | Manchester, MI | Xo Communications Services |
| 734-337 | Washtenaw | Ypsilanti, MI | Broadwing Communications |
| 734-338 | Wayne | Livonia, MI | Comcast Phone Of Michigan |
| 734-339 | Washtenaw | Whitmore Lake, MI | Cellco Partnership DBA Verizon Wireless |
| 734-340 | Wayne | Westland, MI | Comcast Phone Of Michigan |
| 734-341 | Wayne | Trenton, MI | Sprint Spectrum L.p. |
| 734-342 | Monroe | Monroe, MI | Telnet Worldwide |
| 734-343 | Oakland | Southfield, MI | Level 3 Communications |
| 734-344 | Monroe | Monroe, MI | Level 3 Communications |
| 734-345 | Wayne | Belleville, MI | Xo Communications Services |
| 734-346 | Washtenaw | Ann Arbor, MI | American Messaging (am) |
| 734-347 | Monroe | Temperance, MI | Cellco Partnership DBA Verizon Wireless |
| 734-348 | Wayne | Flat Rock, MI | Broadwing Communications |
| 734-349 | Monroe | Monroe, MI | Phone Michigan |
| 734-352 | Washtenaw | Ann Arbor, MI | Mci Worldcom Communications |
| 734-353 | Washtenaw | Ann Arbor, MI | New Cingular Wireless PCS - IL |
| 734-354 | Wayne | Plymouth, MI | Ameritech Michigan |
| 734-355 | Washtenaw | Ann Arbor, MI | New Cingular Wireless PCS - IL |
| 734-357 | Wayne | Detroit, MI | Xo Communications Services |
| 734-358 | Washtenaw | Ann Arbor, MI | New Cingular Wireless PCS - IL |
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.