The United States Australian Football League (USAFL) is the governing body for Australian rules football in the United States. It was conceived in 1996 and organized in 1997. It is based in Sun Prairie, Wisconsin. As of 2011, there were over 1,000 registered USAFL players. There are 50 member clubs, of which 48 have men's teams (all except North Star Blue Ox and the Centennial Tigers) and 27 have women's teams.Most of the football clubs in the United States have a traditional 18-a-side team for representative purposes and multiple 9-a-side teams running in a local league.