| 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 |
|---|---|---|---|
| 313-201 | Wayne | Detroit, MI | American Messaging (am) |
| 313-202 | Oakland | Detroit, MI | Teleport Communications America |
| 313-203 | Oakland | Detroit, MI | Teleport Communications America |
| 313-204 | Wayne | Detroit, MI | New Cingular Wireless PCS - IL |
| 313-205 | Wayne | Detroit, MI | Sprint Spectrum L.p. |
| 313-206 | Wayne | Dearborn, MI | Ameritech Michigan |
| 313-207 | Wayne | Detroit, MI | Sprint Spectrum L.p. |
| 313-208 | Oakland | Southfield, MI | Metro PCS |
| 313-209 | Wayne | Detroit, MI | Peerless Network Of Michigan |
| 313-210 | Wayne | Detroit, MI | Usa Mobility Wireless |
| 313-212 | Wayne | Detroit, MI | New Cingular Wireless PCS - IL |
| 313-213 | Wayne | Melvindale, MI | Omnipoint Communications Midwest Operations LLC |
| 313-214 | Oakland | Southfield, MI | Sprint Spectrum L.p. |
| 313-215 | Wayne | Detroit, MI | Sprint Spectrum L.p. |
| 313-216 | Wayne | Detroit, MI | Xo Communications Services |
| 313-217 | Wayne | Detroit, MI | Usa Mobility Wireless |
| 313-218 | Wayne | Detroit, MI | Sprint Spectrum L.p. |
| 313-219 | Wayne | Detroit, MI | Usa Mobility Wireless |
| 313-220 | Wayne | Detroit, MI | Sprint Spectrum L.p. |
| 313-221 | 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.