314 Area Code

Area Code 314 Location: Missouri

Area code 314 covers the city of St. Louis and its inner-ring suburbs. Specifically, it includes the exchanges of Chestnut, Jefferson, Prospect, Flanders, Forest, Mission, Melrose, Webster Groves, Parkview, Evergreen, Riverview, Ferguson, Overland, Ladue, Kirkwood, Sappington, Mehlville, Oakville, Creve Coeur, Bridgeton, Hazelwood, Florissant, and Spanish Lake.

Counties Served by Area Code 314:

• St. Louis County

Major Cities in the 314 Service Area:

• St. Louis

Other Cities and Towns:

• Bridgeton
• Creve Coeur
• Ferguson
• Florissant
• Hazelwood
• Kirkwood
• Ladue
• Mehlville
• Oakville
• Overland
• Sappington
• Spanish Lake
• Webster Groves

Overlay System

Area code 557 was added to the 314 numbering plan area on August 12, 2022, to form an overlay numbering plan. Both area codes, 314 and 557, serve the same geographic region. Ten-digit dialing is required within this area.

Area Code 314 Location Map

Area code 314 is a general purpose code which was placed in service on January 1, 1947.

314 Area Code Prefixes

Our Missouri phone number lookup service will analyze the three-digit prefix of any 314 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Missouri geographic region, and local calling area associated with the phone number.

Phone numbers follow the following structure under the North American Numbering Plan:

• NPA- area code (where the number was originally assigned)
• NXX - Central office code that locates the specific neighborhood and identifies the service provider
• XXXX - Subscriber number identifies the individual phone line within that local exchange

Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.

Prefixes by Company

Company	Number of Prefixes
SOUTHWESTERN BELL	233
NEW CINGULAR WIRELESS PCS, LLC - IL	79
SPRINT SPECTRUM, L.P.	54
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	42
T-MOBILE USA, INC.	29
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	28
TELEPORT COMMUNICATIONS AMERICA, LLC - MO	20
XO MISSOURI, INC.	17
CHARTER FIBERLINK - MISSOURI, LLC - MO	14
LEVEL 3 COMMUNICATIONS, LLC - MO	13
ONVOY, LLC - MO	13
GLOBAL CROSSING LOCAL SERVICES, INC. - MO	12
AMERICAN MESSAGING SERVICES, LLC	11
FUSION CLOUD SERVICES, LLC	11
WINDSTREAM NUVOX MISSOURI, LLC	11
BANDWIDTH.COM CLEC, LLC - MO	8
MCLEODUSA TELECOMMUNICATION SERVICES, INC. - MO	7
AT&T - LOCAL	6
AT&T CORP.	5
PEERLESS NETWORK OF MISSOURI, LLC - MO	5
USA MOBILITY WIRELESS, INC.	5
LOCAL ACCESS LLC - MO	3
INTRADO COMMUNICATIONS, LLC	2
METROPCS, INC.	2
NUSO, LLC	2
COMMIO, LLC	1
ONVOY SPECTRUM, LLC	1
RCLEC, INC.	1
SOCKET TELECOM, LLC - MO	1
VONAGE AMERICA LLC	1
YMAX COMMUNICATIONS CORP. - MO	1

Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.

Prefixes by Rate Center

Rate Center	Number of Prefixes
LADUE	248
ST LOUIS	233
KIRKWOOD	74
CREVECOEUR	42
SAPPINGTON	19
MEHLVILLE	17
OAKVILLE	5

Other Missouri Area Codes

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