Within the UK and Ireland, the surname Ruiz most frequently occurs in England where it is carried by 1 in 44,820 people. The majority of those with the family name of Ruiz are to be found living in/around Greater London (approx. 47% of all UK Ruiz's), Essex and Greater Manchester. The name can also be found in Wales with 1 in 58,130 people using it, and Ireland with 1 in 91,132.
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