Area Code 975 – Missouri
The phone area code for Missouri is 975 (international format +1975). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 975
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Missouri
Geographic Coverage and Jurisdiction
Area code 975 is a geographic North American Numbering Plan (NANP) code assigned to the state of Missouri, specifically serving the western portion of the state. This includes the Kansas City metropolitan area and its surrounding suburbs, such as Independence, Lee's Summit, and Blue Springs. The numbering plan area (NPA) 975 is an overlay of the existing area codes 816 and 975, meaning that multiple codes serve the same geographic region. This overlay was introduced to ensure a continued supply of telephone numbers for the growing population and business community.
Dialing Procedures
For all calls within the 975 overlay area, ten-digit dialing is mandatory. This applies to local calls, which previously could be made with seven digits. Callers must dial the area code followed by the seven-digit local number. For example, to call a landline in Kansas City from within the same region, you would dial 975-XXX-XXXX. For international callers, the format is +1 975 XXX XXXX, where +1 is the country code for the United States. When calling from outside the U.S., replace the leading '1' with the international access prefix of your country (e.g., 011 from most of North America).
Overlay and Number Pooling
As an overlay, 975 does not require a change to existing numbers in the 816 area code. However, all new telephone lines in the region may be assigned numbers with either 816 or 975. This approach minimizes disruption for residents and businesses while expanding numbering capacity. The overlay also facilitates number pooling, allowing more efficient allocation of prefixes to carriers, which helps delay the exhaustion of available numbers.
Caller Instructions
For local callers within the 975 area, always include the area code when dialing any number, even for what was previously a local seven-digit call. For long-distance calls within the United States, dial 1 followed by the ten-digit number (e.g., 1 975 123 4567). For international callers, use the +1 country code and then the ten-digit number. Remember that the plus sign (+) represents the international access code, which varies by country. When in doubt, consult your service provider for specific dialing instructions.
Administrative and Regulatory Notes
The 975 area code is regulated by the Missouri Public Service Commission and administered under the North American Numbering Plan Administrator (NANPA). It is a geographic code, meaning it is tied to a specific region. However, with the rise of VoIP and mobile services, numbers may not always be physically located within the area, but they remain associated with the region for routing purposes. This is important for businesses that rely on local presence.