Within the UK and Ireland, the surname Duncan is one of the most popular; frequently occuring in Scotland where it is carried by 1 in every 317 people. The majority of those with the family name of Duncan are to be found living in/around Aberdeenshire (approx. 6% of all UK Duncan's), Fife and Aberdeen City. The name can also be found in Ireland with 1 in 1,563 people using it, and England with 1 in 2,834.
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