View the most religious surnames in Ireland

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

The last name O'Cleary occurs more in England more than any other country/territory. It can also appear in the variant forms:. For other potential spellings of this last name click here.

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

The surname is the 2,460,878^th most numerous last name on a worldwide basis. It is borne by around 1 in 119,467,966 people. O'Cleary is mostly found in Europe, where 95 percent of O'Cleary are found; 93 percent are found in Northern Europe and 93 percent are found in British Isles.

The surname is most frequent in England, where it is held by 34 people, or 1 in 1,638,766. In England O'Cleary is most prevalent in: West Midlands, where 59 percent are found, Oxfordshire, where 18 percent are found and Greater London, where 18 percent are found. Aside from England it exists in 5 countries. It is also found in Northern Ireland, where 26 percent are found and Ireland, where 11 percent are found.

O'Cleary Family Population Trend ^{historical fluctuation}

The prevalency of O'Cleary has changed over time. In Ireland the share of the population with the last name fell 56 percent between 1901 and 2014 and in The United States it fell 67 percent between 1880 and 2014.

O'Cleary Last Name Statistics ^demography

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