The age of majority means the age that a child is considered a legal adult in the province where they usually live. The age of majority is 18 in: Alberta Manitoba Ontario Prince Edward Island Quebec Saskatchewan The age of majority is 19 in: British Columbia New Brunswick Newfoundland Northwest Territories Nova Scotia Nunavut Yukon If the child lives outside of Canada, then the age of majority under the Divorce Act is eighteen years. Last updated: March 2021