View the most religious surnames in Ireland

Where Does The Last Name Costelloe Come From? ^{nationality or country of origin}

The surname Costelloe occurs more in Ireland more than any other country/territory. It can occur as:. For other possible spellings of this name click here.

How Common Is The Last Name Costelloe? ^{popularity and diffusion}

The surname is the 143,729^th most frequently occurring last name worldwide, borne by around 1 in 2,355,380 people. This last name occurs mostly in Europe, where 65 percent of Costelloe reside; 65 percent reside in Northern Europe and 65 percent reside in British Isles.

Costelloe is most commonly held in Ireland, where it is borne by 1,442 people, or 1 in 3,266. In Ireland it is most numerous in: Munster, where 49 percent reside, Leinster, where 37 percent reside and Connaught, where 14 percent reside. Not including Ireland this last name exists in 29 countries. It is also common in Australia, where 18 percent reside and England, where 17 percent reside.

Costelloe Family Population Trend ^{historical fluctuation}

The incidence of Costelloe has changed over time. In Ireland the number of people carrying the Costelloe last name fell 16 percent between 1901 and 2014; in England it increased 1,170 percent between 1881 and 2014; in The United States it increased 614 percent between 1880 and 2014 and in Scotland it increased 900 percent between 1881 and 2014.

Costelloe Last Name Statistics ^demography

The religious devotion of those holding the Costelloe surname is principally Catholic (100%) in Ireland.

In The United States those bearing the Costelloe surname are 17.12% more likely to be registered Republicans than The US average, with 63.89% being registered to vote for the party.

The amount Costelloe earn in different countries varies somewhat. In United States they earn 18.7% more than the national average, earning $51,217 USD per year and in Canada they earn 31.16% more than the national average, earning $65,164 CAD per year.