Within the UK and Ireland, the surname Mclachlan most frequently occurs in Scotland where it is carried by 1 in 9,628 people. The majority of those with the family name of Mclachlan are to be found living in/around Glasgow City (approx. 9% of all UK Mclachlan's), South Ayrshire and City of Edinburgh. The name can also be found in England with 1 in 77,750 people using it, and Ireland with 1 in 142,059.
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