English edit

 
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Etymology edit

Variant of Halloran.

Proper noun edit

O'Halloran (plural O'Hallorans)

  1. A surname from Irish.

Statistics edit

  • According to the 2010 United States Census, O'Halloran is the 9839th most common surname in the United States, belonging to 3289 individuals. O'Halloran is most common among White (93.28%) individuals.

Further reading edit