View the most religious surnames in Ireland

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

The last name O'Reagan is more commonly found in Ireland than any other country/territory. It may appear in the variant forms:. Click here for further potential spellings of this surname.

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

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

This last name is most frequently held in Ireland, where it is borne by 48 people, or 1 in 98,103. In Ireland it is most numerous in: Munster, where 71 percent are found and Leinster, where 29 percent are found. Barring Ireland this surname occurs in 6 countries. It is also found in The United States, where 25 percent are found and England, where 15 percent are found.

O'Reagan Family Population Trend ^{historical fluctuation}

The prevalency of O'Reagan has changed over time. In Ireland the share of the population with the surname grew 600 percent between 1901 and 2014; in The United States it fell 58 percent between 1880 and 2014 and in England it grew 633 percent between 1881 and 2014.

O'Reagan Last Name Statistics ^demography

The religious adherence of those holding the surname is predominantly Catholic (100%) in Ireland.