View the most religious surnames in Ireland

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

The last name Roirdan occurs most in The United States. It may also occur as:. Click here for further potential spellings of this last name.

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

This surname is the 7,593,402^nd most numerous surname globally. It is borne by around 1 in 1,214,590,986 people. The surname is primarily found in The Americas, where 67 percent of Roirdan are found; 67 percent are found in North America and 67 percent are found in Anglo-North America.

It is most prevalent in The United States, where it is carried by 3 people, or 1 in 120,819,644. In The United States it is primarily concentrated in: Georgia, where 33 percent are found, Michigan, where 33 percent are found and New York, where 33 percent are found. Excluding The United States Roirdan occurs in 3 countries. It is also found 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 bearing the Roirdan last name 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 adherence of those carrying the Roirdan last name is principally Catholic (100%) in Ireland.