View the most religious surnames in Ireland

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

O'Reagan is carried by more people in Ireland than any other country/territory. It may also be found as a variant:. Click here for further possible spellings of O'Reagan.

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

The last name is the 1,612,213^th most common last name in the world, held by approximately 1 in 58,300,367 people. The last name O'Reagan is primarily found in Europe, where 54 percent of O'Reagan live; 54 percent live in Northern Europe and 54 percent live in British Isles.

This surname is most frequent in Ireland, where it is borne by 48 people, or 1 in 98,103. In Ireland it is mostly found in: Munster, where 71 percent reside and Leinster, where 29 percent reside. Without taking into account Ireland this surname exists in 6 countries. It is also common in The United States, where 25 percent reside and England, where 15 percent reside.

O'Reagan Family Population Trend ^{historical fluctuation}

The prevalency of O'Reagan has changed through the years. In Ireland the number of people bearing the O'Reagan surname increased 600 percent between 1901 and 2014; in The United States it decreased 58 percent between 1880 and 2014 and in England it increased 633 percent between 1881 and 2014.

O'Reagan Last Name Statistics ^demography

The religious adherence of those holding the O'Reagan surname is principally Catholic (100%) in Ireland.