Chilcotin Country - Wikipedia. The Chilcotin (/ tʃ ɪ l ˈ k oʊ t ɪ n /) region of British Columbia is usually known simply as "the Chilcotin", and also in speech commonly as "the Chilcotin Country" or simply Chilcotin.It is a plateau and mountain region in British Columbia on the inland lee of the Coast Mountains on the west side of the Fraser River.Chilcotin is also the name of the river ...