Within the UK and Ireland, the surname Milligan most frequently occurs in Scotland where it is carried by 1 in every 1,511 people. The majority of those with the family name of Milligan are to be found living in/around Glasgow City (approx. 5% of all UK Milligan's), Dumfries and Galloway and East Ayrshire. The name can also be found in Ireland with 1 in 3,788 people using it, and England with 1 in 11,441.
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