Within the UK and Ireland, the surname Kieran most frequently occurs in Ireland where it is carried by 1 in 7,340 people. The majority of those with the family name of Kieran are to be found living in/around Leinster (approx. 36% of all UK Kieran's), Ulster and Munster. The name can also be found in Scotland with 1 in 86,190 people using it, and England with 1 in 116,625.
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