Within the UK and Ireland, the surname Garrigan most frequently occurs in Ireland where it is carried by 1 in 18,090 people. The majority of those with the family name of Garrigan are to be found living in/around Leinster (approx. 32% of all UK Garrigan's), Ulster and Munster. The name can also be found in Wales with 1 in 92,324 people using it, Scotland with 1 in 95,263, and England with 1 in 145,781.
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