View the most religious surnames in Ireland

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

O'Reiley is carried by more people in England than any other country or territory. It can appear as:. For other potential spellings of this name click here.

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

This last name is the 3,055,934^th most frequent last name on earth. It is borne by around 1 in 177,745,022 people. This surname occurs predominantly in Europe, where 54 percent of O'Reiley reside; 37 percent reside in North America and 37 percent reside in Anglo-North America.

The last name is most numerous in England, where it is borne by 13 people, or 1 in 4,286,005. In England O'Reiley is most prevalent in: Greater London, where 46 percent reside, Nottinghamshire, where 38 percent reside and Worcestershire, where 8 percent reside. Without taking into account England it exists in 7 countries. It is also common in The United States, where 29 percent reside and The Netherlands, where 17 percent reside.

O'Reiley Family Population Trend ^{historical fluctuation}

The incidence of O'Reiley has changed through the years. In England the number of people bearing the O'Reiley surname contracted 28 percent between 1881 and 2014; in The United States it contracted 95 percent between 1880 and 2014 and in Wales it contracted 75 percent between 1881 and 2014.

O'Reiley Last Name Statistics ^demography

The religious devotion of those bearing the O'Reiley surname is predominantly Catholic (100%) in Ireland.