List of Missouri area codes
This is a list of telephone area codes in the state of Missouri.
314: St. Louis and many of its immediate suburbs
417: The southwestern corner of Missouri, including Springfield, Joplin and Branson
573: Eastern Missouri excluding the St. Louis area but including Jefferson City, Columbia, Rolla, Cape Girardeau and Hannibal
636: Greater St. Louis area, including St. Charles, Jefferson, and western St. Louis counties; forms a ring surrounding the immediate St. Louis area (314)
660: Northwestern Missouri excluding the Kansas City and St. Joseph metropolitan areas, but including Sedalia, Kirksville, Warrensburg and Maryville
816: The Kansas City and St. Joseph metropolitan areas
The two original area codes for Missouri in 1947 were 314 and 816. Area code 417 was split off in 1950, and the other area codes followed more than 40 years later.
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