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Gladstone, MO is served by area code 816. Area code 816 is one of two original area codes assigned to Missouri, including
Gladstone, MO and put into service on January 1, 1947. In addition to Gladstone, MO area code 816 serves the larger communities of Belton, Blue Springs, Grandview, Independence, Kansas City, Lee's Summit,
Liberty, Raytown and St. Joseph, as well as, many smaller communities in west central Missouri. Although area code 975 has been proposed as an area code overlay of area code 816 which would include
Gladstone, MO, that plan has not been implemented and is considered suspended. At this time Gladstone, MO does not utilize any area code overlays. |
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