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314 Area Code

Area code 314 serves St. Louis, Oakville, University City, Kirkwood, Mehlville and nearby communities in Missouri. It has been in service since January 1, 1947.

StateMissouri
Time zoneCentral
Local time now…
Prefixes in use785
Overlay with557
Projected to run out2060
St. LouisOakvilleUniversity CityKirkwoodMehlvilleMaryland HeightsWebster GrovesArnoldAfftonCreve CoeurSpanish LakeConcordFergusonClaytonLemayOverlandJenningsSt. AnnCrestwoodTown and CountryBellefontaine NeighborsDes PeresRichmond HeightsSunset HillsOlivetteLadueBrentwoodMaplewoodBerkeleySappingtonSt. JohnShrewsburyGlendaleGlasgow VillageSt. LouisOakvilleAffton
Cities and towns served by area code 314

Who issues 314 numbers

Mobile 32%VoIP and cable 25%Landline 43%

Share of the 785 prefixes (the three digits after 314) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
AT&T (Southwestern Bell)254
AT&T Mobility101
T-Mobile94
Verizon Wireless53
Onvoy (Sinch)53
Verizon Business (MCImetro)51
AT&T (Teleport)26
Lumen (Level 3)24

Cities and towns in area code 314

CityPopulationOther area codes
St. Louis278,144557
Oakville35,166557
University City34,657557
Kirkwood29,331557
Mehlville29,089557
Maryland Heights27,559557
Webster Groves23,450557
Arnold20,994557
Affton20,035557
Creve Coeur18,480557
Spanish Lake18,183557
Concord18,028557
Ferguson17,953557
Clayton17,807557
Lemay16,431557
Overland15,474557
Jennings13,093557
St. Ann12,617557
Crestwood12,207557
Town and Country11,619557
Bellefontaine Neighbors10,368557
Des Peres9,102557
Richmond Heights9,093557
Sunset Hills9,075557
Olivette8,937557
Ladue8,934557
Brentwood8,079557
Maplewood8,033557
Berkeley8,026557
Sappington6,882557
St. John6,441557
Shrewsbury6,231557
Glendale6,060557
Glasgow Village5,491557

Got a call from 314?

A 314 number was originally issued in Missouri, but that does not prove the caller is there. 25% of 314 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.

All 785 prefixes in area code 314

Format: (314) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.

Questions about area code 314

Where is area code 314?
Area code 314 is in Missouri. It covers St. Louis, Oakville, University City, Kirkwood, Mehlville, Maryland Heights and 28 more cities and towns.
What time zone is area code 314?
Area code 314 is in the Central time zone.
Is 314 a toll-free number?
No. 314 is a geographic area code in Missouri. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
Why does 314 share its area with 557?
314 and 557 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
Will area code 314 run out of numbers?
NANPA's latest forecast projects the 314/557 overlay to exhaust in the fourth quarter of 2060. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in Missouri