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US area code · Missouri

314 area code

Where the 314 area code is, its overlay and how to dial a +1 314 number from anywhere.

CoversKirkwood, MissouriTime zoneCentral (CT)TypeOverlay
Quick answer

The 314 area code is in Kirkwood, Missouri, United States (Central (CT)). To call from abroad: +1 314 555-0123. It is an overlay, so all 10 digits are dialled.

StateMissouri
Main areaKirkwood
Time zoneCentral (CT)
TypeOverlay
10-digit dialingRequired
In service since01-Jan-1947

The 314 area code is a geographic North American Numbering Plan (NANP) code covering Kirkwood, Missouri. It has been in service since 01-Jan-1947 and sits in the Central (CT) time zone.

Overlay 314 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

314557

How to dial a 314 number

From abroad+1 314 555-0123
Within the US / Canada1 314 555-0123
Locally (same area)314 555-0123

Cities in the 314 area code

A 314 number is usually in one of these places in Missouri — 1 county.

AfftonFergusonFlorissant Saint LouisHazelwood Saint LouisKirkwoodMaryland Heights Saint LouisMehlvilleOakvilleSpanish LakeSt. LouisUniversity CityWebster Groves

Other Missouri area codes

235417557573636660816975

Frequently asked questions

Where is the 314 area code?

The 314 area code is in Kirkwood, Missouri, United States (Central (CT)).

Is 314 an overlay area code?

Yes. 314 overlays the same region as 557, so callers dial all 10 digits.

Do I have to dial 10 digits for 314?

Yes — dial the area code plus the seven-digit number.

How do I call a 314 number from another country?

Dial your exit code (or +), then 1, then 314, then the number: +1 314 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 314 number does not pinpoint a street or ZIP code.

Number holders in area code 314

Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 800 prefixes are in use in 314, shared by 36 companies. The largest holders:

CompanyPrefixesShare
Southwestern Bell25532%
New Cingular Wireless PCS, LLC10113%
T-Mobile USA, Inc.9412%
Cellco Partnership Dba Verizon Wireless537%
Mcimetro Access Transmission Services LLC516%
Onvoy, LLC506%

Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.

Complaints about 314 numbers

Reports to the FTC, last 30 days
934
Recorded messages or robocalls
61%
Rank among area codes
#50 of 670
Most reported subjects
Other (448)
Medical & prescriptions (154)
Dropped call or no message (97)

Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.

Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).

All US area codes United States +1 Map of area code 314 — cities & rate centres

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