Mount Colah Community
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The suburb of Mount Colah has an approximate area of 11 km².
It is surrounded by the suburbs of Asquith, Hornsby, Hornsby Heights, Ku-ring-gai Chase, Mount Kuring-gai and North Turramurra.
It is within the council of Hornsby.
It is within the state electorate of Hornsby.
It is comprised of parts of the federal electorates of Berowra and Bradfield.