There are
123
Gilgans in the USA
Gilgan is the
136449th
most common last name in the USA

Gilgan Genealogy

OriginsThe Gilgan surname has its origins in Ireland, specifically within Gaelic-speaking regions. It is predominantly found in County Donegal and County Derry, but can also be found in other parts of Ireland.
Geographic DistributionThe Gilgan surname is most popular in Ireland, where it has a significant presence in County Donegal and County Derry. It is also found in smaller numbers in other parts of Ireland and has diaspora communities in the United Kingdom and the United States.
VariationsVariations of the Gilgan surname include Gilligan and Gillian.