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Missouri area codes

The state of Missouri, USA is currently served by a total of 7 area codes:

Overlaying area codes

These Missouri area codes overlay (cover the same geographic area). The first code listed is the parent code. Overlay area codes are added when no more phone numbers are available in an existing Numbering Plan Area.

  • 314/557

Larger Missouri cities and their area codes

City CountyArea code(s)
BallwinSt Louis 636
Blue SpringsJackson 816
Cape GirardeauCape Girardeau 573
ChesterfieldSt Louis 636
ColumbiaBoone 573
FlorissantSt Louis 314/557
IndependenceJackson 816
Jefferson CityCole 573
JoplinJasper 417
Kansas CityPlatte 816
Lee's SummitJackson 816
LibertyClay 816
O'FallonSt Charles 636
OakvilleSt Louis 314/557
SpringfieldGreene 417
St CharlesSt Charles 636
St JosephBuchanan 816
St LouisSt Louis 314/557
St PetersSt Charles 636
University CitySt Louis 314/557
WentzvilleSt Charles 636