Find any 314- phone number in Missouri
The 314 area code is an area code assigned to Missouri, as part of the North American Numbering Plan. The 314 area code has been in use since January 1, 1947, and it primarily covers St. Louis, including parts of St. Charles, Franklin, Jefferson and St. Louis counties. The 314 area code is part of an overlapping arrangement that allows it to also be used in an additional four counties located east of the Missouri River.
The North American Numbering Plan (NANP) is a system that was created in 1947 to assign telephone numbers to specific geographic regions. The NANP is divided into three-digit area codes, usually associated with a state or a province. The 314 area code is just one of over 300 area codes that are part of the NANP. The NANP system allows telephone users in the United States and Canada to dial a set of digits and reach the proper telephone address quickly, efficiently and cost-effectively. The NANP system and its associated area codes allow for telephone numbers to be standardized and easier to use.