The Kansas City Chiefs are a professional American football team based in Kansas City, Missouri. The team was founded in 1960 as a charter member of the American Football League (AFL) and joined the National Football League (NFL) in 1970 as part of the AFL-NFL merger.The Chiefs' home field is Arrowhead Stadium, which is located in the Truman Sports Complex in Kansas City, Missouri. The stadium has been home to the team since 1972 and has a seating capacity of over 76,000. The Chiefs' practice facility and team headquarters are located in Kansas City, Missouri.The team has had a successful history, winning the AFL championship in 1962 and Super Bowl IV in 1969. They have also made it to the Super Bowl three times and have won the AFC West division 11 times. The team has also produced a number of notable players throughout its history, including Hall of Famers Len Dawson, Buck Buchanan, and Derrick Thomas.The Kansas City Chiefs have a dedicated fanbase, known as the 'Chiefs Kingdom' which is spread across the state of Missouri and Kansas, as well as across the country. The team has a strong tradition of support from its fans, which includes tailgating before games and wearing team colors.In summary, the Kansas City Chiefs is a professional American football team based in Kansas City, Missouri. The team was founded in 1960, and joined the National Football League in 1970. The team's home field is Arrowhead Stadium located in the Truman Sports Complex in Kansas City, Missouri. The team has had a successful history, winning the AFL championship in 1962 and Super Bowl IV in 1969. The team has a dedicated fanbase known as the 'Chiefs Kingdom' which is spread across the state of Missouri, Kansas and the country. The team has a strong tradition of support from its fans, which includes tailgating before games and wearing team colors.