what area code is 816

Area code 816 is a telephone area code in the North American Numbering Plan (NANP) for Kansas City, St. Joseph, and all or part of 15 surrounding counties in northwestern Missouri. It is the only area code that serves the area. Some of the main locations it covers are Kansas City, St. Joseph, Independence, Lees Summit, Harrisonville, and parts of west-central Missouri. The area code was created in 1947 and has retained its 1951 boundaries for 45 years. Prior to October 2021, area code 816 had telephone numbers assigned for the central office code 988. All existing 816 area code customers will retain their current area code in the overlay area and their telephone numbers will not be changed. The new area code will be 975, and it will co-exist everywhere in this region with the 816 area code. All local calls within this region must be dialed using ten digits rather than seven digits.