| 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 |
|---|---|---|---|
| 734-202 | Monroe | Ida, MI | Cellco Partnership DBA Verizon Wireless |
| 734-204 | Washtenaw | Dexter, MI | Cellco Partnership DBA Verizon Wireless |
| 734-205 | Washtenaw | Ann Arbor, MI | Mci Worldcom Communications |
| 734-206 | Monroe | Temperance, MI | Teleport Communications America |
| 734-207 | Wayne | Plymouth, MI | Ameritech Michigan |
| 734-208 | Wayne | Flat Rock, MI | American Messaging (am) |
| 734-209 | Washtenaw | Ypsilanti, MI | Cellco Partnership DBA Verizon Wireless |
| 734-212 | Washtenaw | Manchester, MI | Phone Michigan |
| 734-213 | Washtenaw | Ann Arbor, MI | Ameritech Michigan |
| 734-214 | Washtenaw | Ann Arbor, MI | Ameritech Michigan |
| 734-215 | Washtenaw | Milan, MI | Phone Michigan |
| 734-216 | Washtenaw | Ann Arbor, MI | Sprint Spectrum L.p. |
| 734-217 | Washtenaw | Ypsilanti, MI | Level 3 Communications |
| 734-218 | Washtenaw | Ypsilanti, MI | New Cingular Wireless PCS - IL |
| 734-219 | Washtenaw | Ypsilanti, MI | Onvoy |
| 734-220 | Monroe | Petersburg, MI | Phone Michigan |
| 734-221 | Washtenaw | Ypsilanti, MI | Centurylink Communications LLC |
| 734-222 | Washtenaw | Ann Arbor, MI | Ameritech Michigan |
| 734-223 | Washtenaw | Ann Arbor, MI | New Cingular Wireless PCS - IL |
| 734-224 | Monroe | Temperance, MI | Buckeye Telesystem |
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.