| 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 |
|---|---|---|---|
| 313-948 | Wayne | Detroit, MI | Cellco Partnership DBA Verizon Wireless |
| 313-949 | Wayne | Detroit, MI | Cellco Partnership DBA Verizon Wireless |
| 313-952 | Oakland | Southfield, MI | Mci Worldcom Communications |
| 313-953 | Wayne | Detroit, MI | Sprint Spectrum L.p. |
| 313-956 | Wayne | Highland Park, MI | Ameritech Michigan |
| 313-957 | Wayne | Highland Park, MI | Ameritech Michigan |
| 313-958 | Wayne | Detroit, MI | Usa Mobility Wireless |
| 313-961 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-962 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-963 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-964 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-965 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-966 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-967 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-969 | Wayne | Detroit, MI | Cellco Partnership DBA Verizon Wireless |
| 313-970 | Wayne | Detroit, MI | New Cingular Wireless PCS - IL |
| 313-971 | Wayne | Detroit, MI | Sprint Spectrum L.p. |
| 313-972 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-974 | Wayne | Detroit, MI | Ameritech Michigan |
| 313-977 | Wayne | Detroit, MI | New Cingular Wireless PCS - IL |
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.