View the most religious surnames in Ireland

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

The last name Roirdan is more frequently found in The United States than any other country or territory. It may be found as a variant:. For other potential spellings of this name click here.

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

It is the 7,593,402^nd most frequently held last name internationally. It is borne by around 1 in 1,214,590,986 people. This last name occurs mostly in The Americas, where 67 percent of Roirdan live; 67 percent live in North America and 67 percent live in Anglo-North America.

The surname is most commonly occurring in The United States, where it is carried by 3 people, or 1 in 120,819,644. In The United States it is most frequent in: Georgia, where 33 percent are found, Michigan, where 33 percent are found and New York, where 33 percent are found. Barring The United States this last name exists in 3 countries. It also occurs in Ireland, where 17 percent are found and Australia, where 17 percent are found.

Roirdan Family Population Trend ^{historical fluctuation}

The occurrence of Roirdan has changed over time. In The United States the number of people carrying the Roirdan surname contracted 91 percent between 1880 and 2014 and in Ireland it contracted 93 percent between 1901 and 2014.

Roirdan Last Name Statistics ^demography

The religious devotion of those carrying the Roirdan last name is chiefly Catholic (100%) in Ireland.