There are
152
Coolahans in the USA
Coolahan is the
115034th
most common last name in the USA

Coolahan Genealogy

OriginsThe Coolahan surname can primarily be traced back to Ireland with its Gaelic origins. It is associated with Irish heritage and is found less commonly in other parts of the world.
Geographic DistributionThe Coolahan surname is predominantly found in Ireland, reflecting its strong presence within the country's population. It may also be found in smaller numbers in other countries due to migration and diaspora.