O'Riordan Surname

61,620th
Most Common
surname in the World

Approximately 8,158 people bear this surname

Most prevalent in:
Ireland
Highest density in:
Ireland

O'Riordan Surname Definition:

Ó Riordáin This numerous sept belongs exclusively to Munster. IF 257; Map Cork; Plate XXV

O'Riordan Surname Distribution Map

PlaceIncidenceFrequencyRank in Area
Ireland5,7601:818146
England1,4651:38,0334,947
United States3111:1,165,46383,401
Australia2761:97,81111,085
Canada1681:219,31921,150
Scotland611:87,7676,275
Northern Ireland391:47,3094,079
South Africa211:2,579,891103,459
Zimbabwe181:857,68057,134
New Zealand151:301,88825,890
Wales111:281,32115,850
Belgium101:1,149,66482,403
France71:9,488,960336,266
United Arab Emirates61:1,527,04651,993
China51:273,464,31313,838
Spain51:9,350,407109,555
Germany41:20,126,365436,245
Singapore41:1,376,92628,409
Netherlands31:5,629,059132,535
Sweden31:3,282,252190,759
Switzerland31:2,737,638105,941
Italy31:20,385,563143,117
Russia21:72,061,528727,117
Hong Kong21:3,667,74211,574
Montenegro21:319,7827,691
Israel21:4,278,817136,311
Isle of Man11:85,8224,091
Guernsey11:64,4392,137
Brazil11:214,074,3321,693,628
Cayman Islands11:63,8932,384
Chile11:17,616,47493,597
Colombia11:47,774,07244,230
Trinidad and Tobago11:1,363,97522,013
Malaysia11:29,494,225409,885
Saudi Arabia11:30,855,81763,028
Qatar11:2,357,99976,403
Oman11:3,687,97114,390
Norway11:5,142,286129,201
PlaceIncidenceFrequencyRank in Area
Ireland3941:11,2431,561
PlaceIncidenceFrequencyRank in Area
England111:2,215,94364,354
PlaceIncidenceFrequencyRank in Area
United States101:5,021,868210,693

O'Riordan (75) may also be a first name.

O'Riordan Surname Meaning

From Where Does The Surname Originate? meaning and history

Ó Riordáin This numerous sept belongs exclusively to Munster. IF 257; Map Cork; Plate XXV

A Guide to Irish Names (1964) by Edward MacLysaght

O'Riordan Last Name Facts

Where Does The Last Name O'Riordan Come From? nationality or country of origin

The surname O'Riordan is more commonly found in Ireland than any other country/territory. It may be rendered in the variant forms:. Click here for other potential spellings of this last name.

How Common Is The Last Name O'Riordan? popularity and diffusion

The surname O'Riordan is the 61,620th most frequently used last name at a global level, borne by around 1 in 893,301 people. This surname is predominantly found in Europe, where 90 percent of O'Riordan are found; 90 percent are found in Northern Europe and 90 percent are found in British Isles. It is also the 1,116,575th most common forename globally, borne by 75 people.

The last name is most common in Ireland, where it is held by 5,760 people, or 1 in 818. In Ireland it is mostly found in: Munster, where 75 percent are found, Leinster, where 21 percent are found and Connaught, where 3 percent are found. Apart from Ireland this last name is found in 37 countries. It is also found in England, where 18 percent are found and The United States, where 4 percent are found.

O'Riordan Family Population Trend historical fluctuation

The prevalency of O'Riordan has changed over time. In Ireland the number of people who held the O'Riordan last name grew 1,462 percent between 1901 and 2014; in England it grew 13,318 percent between 1881 and 2014 and in The United States it grew 3,110 percent between 1880 and 2014.

O'Riordan Last Name Statistics demography

The religious adherence of those holding the O'Riordan last name is primarily Catholic (100%) in Ireland.

The amount O'Riordan earn in different countries varies greatly. In United States they earn 103.84% more than the national average, earning $87,954 USD per year and in Canada they earn 16.84% more than the national average, earning $58,048 CAD per year.

Phonetically Similar Names

SurnameSimilarityWorldwide IncidencePrevalency
O'Riordain95114/
O'Rioordan951/
O'Reiordan950/
Oriordan941,059/
O'Riorden8912/
O'Reordan895/
O'Riordon894/
Oriordain892/
Ooriordan891/
O'Riardain841/
O'Rieordon841/
Oriordon8224/
Oriorden8216/
O'Reorden780/
O'Reardan780/
Oriardon711/
Oreardan711/
O'Reardon67202/
O'Rearden670/

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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
  • Descriptions may contain details on the name's etymology, origin, ethnicity and history. They are largely reproduced from 3rd party sources; diligence is advised on accepting their validity - more information
  • 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'Riordan
  • To find out more about this surname's family history, lookup records on Family​Search, My​Heritage, FindMyPast and Ancestry. Further information may be obtained by DNA analysis