314 Area Code

The 314 area code is found in the state of Missouri, and spans 15 different Counties. Listed below are the 15 Counties that reside inside of the 314 area code. Included under the Counties are the cities within the given County.
Boone County Missouri
Columbia
Christian County Missouri
Ozark
Cole County Missouri
Jefferson City
Franklin County Missouri
Gray Summit, Pacific, Robertsville, Saint Clair, Union, Villa Ridge, Washington
Jefferson County Missouri
Arnold, Barnhart, Cedar Hill, Crystal City, De Soto, High Ridge, House Springs, Imperial, Kimmswick
Morgan County Missouri
Gravois Mills
New Madrid County Missouri
Kewanee
Perry County Missouri
Frohna
Phelps County Missouri
Rolla
Pulaski County Missouri
Fort Leonard Wood
Saint Charles County Missouri
Lake Saint Louis, O Fallon, Saint Charles, Saint Peters, Wentzville
Saint Francois County Missouri
Farmington
Saint Louis County Missouri
Ballwin, Bridgeton, Chesterfield, Earth City, Eureka, Fenton, Florissant, Grover, Hazelwood, Maryland Heights, Saint Ann, Saint Louis, Valley Park
Warren County Missouri
Warrenton
Saint Louis City County Missouri
Saint Louis