Understanding the local phone number system is more important than you might think when starting a new life or running a business in the U.S.

Here is a summary of the basic information regarding the area codes and communication infrastructure used in Kansas City (Kansas City, MO) and the surrounding metropolitan area.

The main area code for the Kansas City Missouri area is 816. 816 is used in the western metropolitan area of Missouri, including downtown Kansas City, Jackson County, Clay County, and Platte County. As Kansas City grew and the demand for phone numbers increased, a new area code, 975, was added to the same area in 2001. Both area codes are used interchangeably within the same geographic area, and calls can be made to Kansas City using either code.

The Kansas side of Kansas City (Kansas City, KS) and areas like Overland Park and Olathe primarily use area code 913. The 913 area code is assigned to the eastern metropolitan area of Kansas, and even within the same Kansas City metropolitan area, different area codes are used based on state boundaries. Therefore, when calling from Kansas City MO to a Kansas City KS number, you must enter the area code (913).

It's also helpful to note the area codes of nearby cities. The eastern areas of Kansas City, such as Columbia, MO, and Jefferson City, use area codes 573 or 636. Springfield, MO, uses the 417 code. St. Louis, MO, uses 314 and 636. While memorizing area codes may not have much practical value due to the prevalence of mobile calls in the U.S., it can be convenient to know them as you can identify someone's location just by their phone number's area code.

In the internet service sector, Spectrum (Charter Communications), AT&T, and Google Fiber are the main providers in Kansas City. Notably, Kansas City is famous for being the first city in the U.S. where Google Fiber launched commercial service in 2012. As the first city to offer gigabit (1Gbps) fiber internet to the public, it earned the nickname 'Gigabit City.' Since then, other providers have competitively expanded their fiber networks, and Kansas City's internet infrastructure is now among the best in the U.S.

For mobile services, all three major carriers—AT&T, T-Mobile, and Verizon—offer 4G LTE and 5G services in Kansas City. T-Mobile has been the most proactive in building its 5G network based in Kansas City, providing coverage in most of downtown and major suburban areas. Those moving to Kansas City are encouraged to compare the actual coverage maps of each carrier to check the signal quality in their residential and workplace areas before making a choice.

In terms of business communication infrastructure, Kansas City is emerging as a data center hub in the Midwest. Due to reasonable real estate costs, reliable power supply, and geographic centrality, several large data center companies operate facilities in Kansas City. These strengths in communication infrastructure are among the reasons why remote work, IT startups, and fintech companies prefer Kansas City.

Emergency calls use the nationwide common number 911. Non-emergency police inquiries can be directed to the Kansas City Police Department's general number (816-234-5111). For general inquiries, you can use the previously mentioned 311 service. Saving public service contact numbers in advance can be helpful in emergencies. Recently, it has also become possible to report to 911 via text (SMS), and this service is available in the Kansas City metropolitan area as well.