Cities in area code 314
314 numbers are anchored to 7 rate centers across Missouri. Each row shows how many active prefixes the locality holds — a direct measure of its numbering footprint.
Saint Louis, Ladue, Kirkwood, Creve Coeur, Sappington, Mehlville and Oakville hold the largest prefix inventories. Each locality below links to its rate-center page with the full prefix list.
Metropolitan coverage: 7 rate centers belong to FCC top-100 metro areas.
Overlap note: 7 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.
Clock-wise the coverage is Central.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Saint Louis | 296 | St. Louis, MO-IL | 314, 557 |
| Ladue | 286 | St. Louis, MO-IL | 314, 557 |
| Kirkwood | 89 | St. Louis, MO-IL | 314, 557 |
| Creve Coeur | 51 | St. Louis, MO-IL | 314, 557 |
| Sappington | 25 | St. Louis, MO-IL | 314, 557 |
| Mehlville | 24 | St. Louis, MO-IL | 314, 557 |
| Oakville | 11 | St. Louis, MO-IL | 314, 557 |
FAQ
What is the biggest city in area code 314?
Saint Louis holds the most active prefixes (296), making it the code's largest numbering locality.
How many places does 314 cover?
7 rate centers in Missouri hold active 314 prefixes, from Saint Louis down to communities with a single prefix.
Does a 314 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.