Within the UK and Ireland, the surname Colquhoun most frequently occurs in Scotland where it is carried by 1 in every 3,083 people. The majority of those with the family name of Colquhoun are to be found living in/around Glasgow City (approx. 7% of all UK Colquhoun's), North Lanarkshire and South Lanarkshire. The name can also be found in England with 1 in 30,358 people using it.
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