Denver Broncos is a professional American football team based in Denver , Colorado . They currently the National Football League 's American Football Conference West in which a team. The Broncos became a member of the American Football League (AFL) in 1960. After the merger of the American Football League and the NFL in 1970, the Broncos became the NFL team. Shop the latest Denver Broncos sports face masks in our NFL DESIGN FACE MASKS SHOP.