Within the UK and Ireland, the surname Olson most frequently occurs in Wales where it is carried by 1 in 73,000 people. The majority of those with the family name of Olson are to be found living in/around Rhondda Cynon Taf County Borough (approx. 2% of all UK Olson's), City and County of Cardiff and Conwy County Borough. The name can also be found in England with just 1 in every 116,625 people using it, and Scotland with 1 in 142,895.
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