Cariboo was one of the twelve original electoral districts created when British Columbia became a Canadian province in 1871. Roughly corresponding to the old colonial electoral administrative district of the same name, it was a three-member riding until the 1894 election, when it was reduced through reapportionment and became a two-member riding until the 1916 election, after which it has been a single-member riding. It produced many notable Members of the Legislative Assembly (MLAs), including George Anthony Boomer Walkem, third and fifth holder of the office of Premier of British Columbia and who was one of the first representatives elected from the riding; John Robson, ninth Premier of British Columbia; and Robert Bonner, a powerful minister in the W.A.C. Bennett cabinet, and later CEO of MacMillan Bloedel and BC Hydro.