View the most religious surnames in Ireland

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

O'Reagan is more frequently found in Ireland than any other country or territory. It can occur as:. Click here for further possible spellings of this last name.

How Common Is The Last Name O'Reagan? ^{popularity and diffusion}

The surname is the 1,612,213^th most frequently occurring surname in the world. It is borne by approximately 1 in 58,300,367 people. This surname occurs mostly in Europe, where 54 percent of O'Reagan live; 54 percent live in Northern Europe and 54 percent live in British Isles.

The last name is most widespread in Ireland, where it is carried by 48 people, or 1 in 98,103. In Ireland it is most numerous in: Munster, where 71 percent reside and Leinster, where 29 percent reside. Beside Ireland it occurs in 6 countries. It also occurs in The United States, where 25 percent reside and England, where 15 percent reside.

O'Reagan Family Population Trend ^{historical fluctuation}

The frequency of O'Reagan has changed over time. In Ireland the number of people bearing the O'Reagan last name expanded 600 percent between 1901 and 2014; in The United States it fell 58 percent between 1880 and 2014 and in England it expanded 633 percent between 1881 and 2014.

O'Reagan Last Name Statistics ^demography

The religious adherence of those holding the O'Reagan last name is chiefly Catholic (100%) in Ireland.