Within the UK and Ireland, the surname Mcgowan most frequently occurs in Ireland where it is carried by 1 in every 970 people. The majority of those with the family name of Mcgowan are to be found living in/around Ulster (approx. 26% of all UK Mcgowan's), Leinster and Connaught. The name can also be found in Scotland with 1 in 5,934 people using it, and England with 1 in 24,499.
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