Within the UK and Ireland, the surname Donegan most frequently occurs in Ireland where it is carried by 1 in every 2,211 people. The majority of those with the family name of Donegan are to be found living in/around Leinster (approx. 27% of all UK Donegan's), Munster and Ulster. The name can also be found in England with 1 in 32,814 people using it.
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