| District of Missouri area codes: 314 | |
|---|---|
| Country | United States |
| State/Province | Missouri |
| Major City | Saint Louis |
| Time Zone | Central |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 314-830 | Saint Louis | Florissant, MO | Southwestern Bell |
| 314-831 | Saint Louis | Florissant, MO | Southwestern Bell |
| 314-832 | Saint Louis City | Saint Louis, MO | Southwestern Bell |
| 314-833 | Saint Louis City | Saint Louis, MO | Mcleodusa Telecommunications Services- Mo |
| 314-834 | Saint Louis | Creve Coeur, MO | American Messaging (am) |
| 314-835 | Saint Louis | Kirkwood, MO | Southwestern Bell |
| 314-836 | Saint Louis City | Saint Louis, MO | American Messaging (am) |
| 314-837 | Saint Louis | Florissant, MO | Southwestern Bell |
| 314-838 | Saint Louis | Florissant, MO | Southwestern Bell |
| 314-839 | Saint Louis | Florissant, MO | Southwestern Bell |
| 314-840 | Saint Louis City | Saint Louis, MO | American Messaging (am) |
| 314-841 | Saint Louis City | Saint Louis, MO | American Messaging (am) |
| 314-842 | Saint Louis | Sappington, MO | Southwestern Bell |
| 314-843 | Saint Louis | Sappington, MO | Southwestern Bell |
| 314-844 | Saint Louis | Creve Coeur, MO | Southwestern Bell |
| 314-845 | Saint Louis | Mehlville, MO | Southwestern Bell |
| 314-846 | Saint Louis | Oakville, MO | Southwestern Bell |
| 314-848 | Saint Louis City | Saint Louis, MO | Southwestern Bell |
| 314-849 | Saint Louis | Sappington, MO | Southwestern Bell |
| 314-851 | Saint Louis | Creve Coeur, MO | Southwestern Bell |
There are 662 prefixes, In the code area, the major cities are Affton, MO;Ferguson, MO;Florissant, MO;Hazelwood, . The major city is Saint Louis.