314 area code — Saint Louis, MO geographic
The 314 area code covers Saint Louis, Missouri, Central time zone, and dates back to January 1, 1947. It is part of the 314/557 overlay complex — these codes share the same territory. Note that porting and VoIP mean a 314 number can be used from anywhere — the code marks where the number was assigned.
782 central-office prefixes are currently active in this code, spread across 33 code-holding carriers. Thousands-block pooling applies to 492 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 7 distinct rate centers.
NANPA projects numbering capacity for the 314/557 complex to exhaust in 4Q 2060.
Dialing: 10D locally, 10D to other codes (1+10 digit permissible at service provider discretion.).
Among Missouri codes, 314 stands out as the oldest area code in Missouri, in service since 1947.
If a 314 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.
It has since spawned 573 (1996), 636 (1999), 557 (2022).
Largest localities in 314
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Saint Louis | 296 | 557 |
| Ladue | 286 | 557 |
| Kirkwood | 89 | 557 |
| Creve Coeur | 51 | 557 |
| Sappington | 25 | 557 |
| Mehlville | 24 | 557 |
| Oakville | 11 | 557 |
FAQ
Why am I getting spam calls from 314 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 314 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 314 number from?
314 is assigned to Saint Louis and surrounding areas of Missouri in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 314 a toll-free number?
No. 314 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 557 and 314 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 314/557 complex shares one service area, and local calls are dialed with 10 digits.