View the most religious surnames in Ireland

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

O'Mullen occurs in Northern Ireland more than any other country/territory. It can be rendered in the variant forms:. Click here for further possible spellings of this last name.

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

This last name is the 7,593,402^nd most commonly held family name on a worldwide basis, borne by around 1 in 1,214,590,986 people. This last name occurs mostly in Europe, where 67 percent of O'Mullen reside; 67 percent reside in Northern Europe and 67 percent reside in British Isles.

The surname is most commonly occurring in Northern Ireland, where it is borne by 4 people, or 1 in 461,259. In Northern Ireland it is mostly concentrated in: Ulster, where 100 percent reside. Not including Northern Ireland it is found in one country. It also occurs in The United States, where 33 percent reside.

O'Mullen Family Population Trend ^{historical fluctuation}

The prevalency of O'Mullen has changed through the years. In The United States the share of the population with the last name contracted 75 percent between 1880 and 2014.

O'Mullen Last Name Statistics ^demography

The religious adherence of those bearing the O'Mullen last name is predominantly Catholic (100%) in Ireland.