The Kansas City Chiefs are a professional American football team based in Kansas City, Missouri. They play in the National Football League (NFL) as a member club of the leagues American Football Conference (AFC) West division. The team was established on August 14, 1959, and was initially located in Dallas, Texas, where they were known as the Dallas Texans. The team was renamed the Kansas City Chiefs on May 26, 1963, after the franchise was relocated to Kansas City, Missouri.

Kansas City, Missouri is a city located in the Midwestern United States. It is the largest city in the state of Missouri and the sixth-largest city in the Midwest. Arrowhead Stadium, where the Kansas City Chiefs play their home games, is located in Kansas City, Missouri.

In summary, the Kansas City Chiefs are based in Kansas City, Missouri.