O'Briens Surname
Approximately 4 people bear this surname
O'Briens Surname Distribution Map
| Place | Incidence | Frequency | Rank in Area |
|---|---|---|---|
| Ireland | 3 | 1:1,569,646 | 17,286 |
| Brazil | 1 | 1:214,074,332 | 1,693,628 |
| Canada | 1 | 1:36,845,591 | 464,108 |
| France | 1 | 1:66,422,722 | 504,397 |
| United States | 1 | 1:362,458,933 | 1,988,048 |
| Vietnam | 1 | 1:92,646,054 | 8,382 |
| Place | Incidence | Frequency | Rank in Area |
|---|---|---|---|
| Ireland | 23 | 1:192,603 | 9,322 |
| Place | Incidence | Frequency | Rank in Area |
|---|---|---|---|
| Scotland | 9 | 1:415,913 | 11,811 |
| England | 1 | 1:24,375,369 | 195,128 |
| Wales | 1 | 1:1,568,416 | 19,290 |
| Place | Incidence | Frequency | Rank in Area |
|---|---|---|---|
| United States | 1 | 1:50,218,684 | 817,899 |
O'Briens Demographics
O'Briens Religious Adherence
in Ireland
Religious Adherence
in Ireland
O'Briens Last Name Facts
Where Does The Last Name O'Briens Come From? nationality or country of origin
O'Briens is borne by more people in Ireland than any other country/territory. It can also occur as a variant:. Click here to see other potential spellings of this surname.
How Common Is The Last Name O'Briens? popularity and diffusion
The last name is the 8,968,613th most widely held surname world-wide. It is borne by approximately 1 in 1,821,886,479 people. The last name is mostly found in Europe, where 100 percent of O'Briens are found; 75 percent are found in Northern Europe and 75 percent are found in British Isles.
It is most commonly held in Ireland, where it is held by 3 people, or 1 in 1,569,646. In Ireland O'Briens is most numerous in: Leinster, where 67 percent reside and Munster, where 33 percent reside. Other than Ireland this surname is found in 5 countries. It is also found in Brazil, where 25 percent reside and Canada, where 25 percent reside.
O'Briens Family Population Trend historical fluctuation
The incidence of O'Briens has changed over time. In Ireland the number of people bearing the O'Briens last name decreased 87 percent between 1901 and 2014.
O'Briens Last Name Statistics demography
The religious devotion of those holding the O'Briens last name is predominantly Catholic (78%) in Ireland.
Phonetically Similar Names
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Footnotes
- Surnames are taken as the first part of an person's inherited family name, caste, clan name or in some cases patronymic
- Name distribution statistics are generated from a global database of over 4 billion people - more information
- Heatmap: Dark red means there is a higher occurrence of the name, transitioning to light yellow signifies a progressively lower occurrence. Clicking on selected countries will show mapping at a regional level
- Rank: Name are ranked by incidence using the ordinal ranking method; the name that occurs the most is assigned a rank of 1; name that occur less frequently receive an incremented rank; if two or more name occur the same number of times they are assigned the same rank and successive rank is incremented by the total preceeding names
- Ethnic group cannot necessarily be determined by geographic occurrence
- Similar: Names listed in the "Similar" section are phonetically similar and may not have any relation to O'Briens
- To find out more about this surname's family history, lookup records on FamilySearch, MyHeritage, FindMyPast and Ancestry. Further information may be obtained by DNA analysis