Buckingham was a city located in the Outaouais region of the province of Quebec. Since January 1, 2002, it has been part of the amalgamated city of Gatineau which merged five former municipalities, including Masson-Angers, Buckingham, Hull, Aylmer, and Gatineau, into a single entity. The 2006 population according to the 2006 Census is 22,078