Each of the 32 traditional counties of Ireland is represented by a county side. Every county, except Kilkenny, participated in the 2001 All-Ireland Senior Football Championship. The "overseas county" of New York also participated, while London played no part in the competition due to the outbreak of Foot-and-mouth disease. Each county in Ireland is located in a province; for the purpose of the All-Ireland Senior Football Championship, London and New York are located in Connacht. The 2001 All-Ireland Senior Football Championship began with the four provincial championships – knock-out competitions between county sides in the same province. The four winners of these championships progressed automatically to the All-Ireland quarter-finals. The sides which did not win a provincial championship entered the All-Ireland qualifiers to determine which other four teams would play in the quarter-finals. New York, however, only competed in the provincial championship.