The Buffalo Bills are a professional American football team based in Buffalo, New York. They compete in the National Football League (NFL) as a member club of the league's American Football Conference (AFC) East division. The team was founded in 1960 as a charter member of the American Football League (AFL) before merging with the NFL in 1970. The Bills have won the AFC East division title several times and appeared in four consecutive Super Bowls from 1990 to 1993, although they were unable to win any of them. The team is known for its loyal fan base and its passionate supporters, who are often referred to as the "Bills Mafia."