View the most religious surnames in Ireland

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

O'Sulivan is more frequently found in Ireland than any other country/territory. It can be rendered as:. For other possible spellings of O'Sulivan click here.

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

The last name is the 2,460,878^th most numerous last name world-wide It is held by around 1 in 119,467,966 people. The last name O'Sulivan occurs mostly in Europe, where 66 percent of O'Sulivan reside; 62 percent reside in Northern Europe and 62 percent reside in British Isles.

The surname is most frequent in Ireland, where it is borne by 26 people, or 1 in 181,113. In Ireland O'Sulivan is most prevalent in: Munster, where 54 percent are found, Leinster, where 8 percent are found and Connaught, where 4 percent are found. Not including Ireland this last name is found in 7 countries. It is also found in Australia, where 20 percent are found and England, where 18 percent are found.

O'Sulivan Family Population Trend ^{historical fluctuation}

The occurrence of O'Sulivan has changed over time. In Ireland the share of the population with the surname grew 867 percent between 1901 and 2014; in England it grew 275 percent between 1881 and 2014; in The United States it contracted 94 percent between 1880 and 2014.

O'Sulivan Last Name Statistics ^demography

The religious devotion of those holding the O'Sulivan last name is predominantly Catholic (100%) in Ireland.