| District of Michigan area codes: 313 | |
|---|---|
| Country | United States |
| State/Province | Michigan |
| Major City | Detroit |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 313-893 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-894 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-895 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-896 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-897 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-898 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-899 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-903 | Wayne | Melvindale, MI | Omnipoint Communications Midwest Operations LLC |
| 313-908 | Wayne | Melvindale, MI | New Cingular Wireless PCS - IL |
| 313-909 | Wayne | Detroit, MI | Cellco Partnership DBA Verizon Wireless |
| 313-910 | Wayne | Detroit, MI | Cellco Partnership DBA Verizon Wireless |
| 313-912 | Wayne | Detroit, MI | Cellco Partnership DBA Verizon Wireless |
| 313-914 | Wayne | Melvindale, MI | New Cingular Wireless PCS - IL |
| 313-915 | Oakland | Southfield, MI | Mci Worldcom Communications |
| 313-916 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-917 | Wayne | Detroit, MI | New Cingular Wireless PCS - IL |
| 313-918 | Wayne | Detroit, MI | Metro PCS |
| 313-919 | Wayne | Detroit, MI | Cellco Partnership DBA Verizon Wireless |
| 313-920 | Wayne | Detroit, MI | Cellco Partnership DBA Verizon Wireless |
| 313-921 | Wayne | Detroit, MI | Ameritech Michigan |
There are 633 prefixes, In the code area, the major cities are Allen Park, MI;Dearborn, MI;Dearborn Heights, MI;D. The major city is Detroit.