View the most religious surnames in Ireland

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

O'Reilley is held by more people in Canada than any other country/territory. It can appear in the variant forms:. Click here to see other potential spellings of this surname.

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

The last name O'Reilley is the 1,353,468^th most widely held last name on a worldwide basis. It is borne by around 1 in 44,436,256 people. This last name occurs mostly in The Americas, where 68 percent of O'Reilley reside; 65 percent reside in North America and 65 percent reside in Anglo-North America.

It is most frequently used in Canada, where it is borne by 57 people, or 1 in 646,414. In Canada O'Reilley is primarily concentrated in: Ontario, where 39 percent reside, Alberta, where 19 percent reside and British Columbia, where 18 percent reside. Barring Canada this surname exists in 8 countries. It also occurs in The United States, where 31 percent reside and Australia, where 14 percent reside.

O'Reilley Family Population Trend ^{historical fluctuation}

The occurrence of O'Reilley has changed through the years. In The United States the number of people who held the O'Reilley last name decreased 70 percent between 1880 and 2014 and in England it grew 125 percent between 1881 and 2014.

O'Reilley Last Name Statistics ^demography

The religious devotion of those bearing the O'Reilley last name is chiefly Catholic (100%) in Ireland.

The amount O'Reilley earn in different countries varies somewhat. In United States they earn 8.98% more than the national average, earning $47,025 USD per year and in Canada they earn 17.98% more than the national average, earning $58,615 CAD per year.