Within the UK and Ireland, the surname Silcox most frequently occurs in Wales where it is carried by 1 in 11,014 people. The majority of those with the family name of Silcox are to be found living in/around Caerphilly County Borough (approx. 14% of all UK Silcox's), Blaenau Gwent County Borough and City and County of Newport. The name can also be found in England with just 1 in every 111,292 people using it.
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