Area Code Overview

Area code 314 is a geographic telephone area code in Missouri that went into service on January 1, 1947. The geographic regions covered by this area code overlay has a population of approximately 1,272,624.

Overlay and Dialing Rules

Area Code: 314
State: Missouri
Type: General Purpose Code
In Service Date: January 1, 1947
Overlay Complex: 314/557
Local Dialing Plan: This area does require you to dial the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 314

This area code is ranked 41st out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 1st out of 9.

6,663,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 314

Total assigned 6,663,000

Wireless

2,762,000 assigned

41.45%

Wireline and VoIP

3,360,000 assigned

50.43%

Other / Unclassified

541,000 assigned

8.12%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 314

Estimated assigned wireless phone numbers: 2,762,000

Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.

T-Mobile 1,210,000 (43.81%)

AT&T Wireless 1,043,000 (37.76%)

Verizon Wireless 508,000 (18.39%)

Optimum Mobile 1,000 (0.04%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 314

Estimated assigned wireline and VoIP phone numbers: 3,360,000

AT&T 1,627,000 (48.42%)

Onvoy 505,000 (15.03%)

Bandwidth 359,000 (10.68%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 224,000 (6.67%)

PAETEC ITEL, LLC 150,000 (4.46%)

Lumen 147,000 (4.38%)

CHARTER IP ENABLED SERVICES, LLC 137,000 (4.08%)

Peerless Network 87,000 (2.59%)

Spectrum 67,000 (1.99%)

Telnyx 21,000 (0.63%)

TERRA NOVA TELECOM INC. 11,000 (0.33%)

NUSO 8,000 (0.24%)

Other / Unclassified Assigned Numbering in Area Code 314

Estimated assigned other or unclassified phone numbers: 541,000

AMERICAN MESSAGING SERVICES, LLC 200,000 (36.97%)

SPOK, INC. 160,000 (29.57%)

TELEPORT COMMUNICATIONS AMERICA, LLC - MO 157,000 (29.02%)

IP HORIZON LLC 13,000 (2.40%)

FRACTEL, LLC 4,000 (0.74%)

HD CARRIER LLC 3,000 (0.55%)

STRATUS NETWORKS 3,000 (0.55%)

EXIANT COMMUNICATIONS LLC 1,000 (0.18%)

Cities and Towns in Area Code 314

Creve Coeur, Missouri Kirkwood, Missouri La Due, Missouri Mehlville, Missouri Oakville, Missouri Sappington, Missouri St. Louis, Missouri

These geographic regions are also served by area code 557.

How These Figures Were Built

These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 314, not live customer counts.

Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.

They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.

Population data and locality matching provided by GeoNames.

Last refreshed: April 15, 2026 6:22 pm