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Oakville, MO is served by area code 314. Area code 314 is one of two original area codes assigned to Missouri, including
Oakville, MO and put into service on January 1, 1947. In addition to Oakville, MO area code 314 serves the larger communities of Affton, Ferguson, Florissant, Hazelwood, Kirkwood, Maryland Heights, Mehville,
Overland, Spanish Lake, St. Louis, University City and Webster Grove, as well as, many suburbs near St. Louis. Although area code 557 has been proposed as an area code overlay of area code 314 which would
include Oakville, MO, that plan has not been implemented and is considered suspended. At this time Oakville, MO does not utilize any area code overlays. |
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