The answer depends on what you mean by “Chiefs.” Most likely, you are asking about the NFL team, the Kansas City Chiefs.
Kansas City Chiefs location
The Kansas City Chiefs are a professional American football team based in Kansas City, Missouri, in the United States.
They play their home games at Arrowhead Stadium, which is part of the Truman Sports Complex in Kansas City, Missouri.
Origin of the team and name
The franchise began as the Dallas Texans in the American Football League before relocating to Kansas City in the 1960s and becoming the Chiefs.
The name “Chiefs” was chosen in connection with Kansas City mayor H. Roe Bartle, whose nickname was “Chief,” rather than as a direct reference to Native American peoples.
If you meant “chiefs” in general
The English word “chief” comes from Old French “chief/chef,” ultimately from Latin “caput,” meaning “head” or “leader.”
It has been used in English since the Middle Ages to mean a leader or person of highest rank, and later was applied to heads of clans and some Indigenous leaders.