Explore the Family Name O’riordan
The meaning of O’riordan
Irish (Kerry): Anglicized form of Gaelic Ó Ríoghbhárdáin ‘descendant of Ríoghbhárdán’, a byname composed of the elements ríogh- ‘royal’ + a diminutive of bárd ‘bard, poet’ (see Riordan). This family is probably descended from Ríoghbhardán Ó Cearbhaill, who fell in battle in 1058. Some characteristic forenames: Irish Colm, Brigid, Cormac, Eamonn, Eithne, Eoin.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name O’riordan in the United States?
Based on the Decennial U.S. Census, the popularity of the surname O’Riordan has increased over time. In the year 2000, it was ranked 37,266 in terms of commonality with a count of 563 people having this surname. A decade later, in 2010, the rank improved to 33,810 with the count increasing to 673 people. This represents a change of 9.27% in rank and an increase of 19.54% in the count of individuals bearing the name O’Riordan. The proportion per 100k also saw an increase from 0.21 to 0.23, indicating a growth of approximately 9.52%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #37,266 | #33,810 | 9.27% |
| Count | 563 | 673 | 19.54% |
| Proportion per 100k | 0.21 | 0.23 | 9.52% |
Race and Ethnicity of people with the last name O’riordan
The ethnic identity associated with the surname O’Riordan, as per the Decennial U.S. Census data, is predominantly White. In 2000, 96.98% of those with the surname were White, which slightly decreased to 95.39% by 2010. There was a notable increase among those identifying as two or more races, rising from 0.89% to 1.78%, reflecting a 100% change. The percentage of Asian/Pacific Islanders also rose by 33.71%, from 0.89% to 1.19%. Hispanic representation decreased from 0.89% to 0.74%, a drop of 16.85%. There were no recorded instances of Black or American Indian and Alaskan Native individuals carrying the O’Riordan surname during these census years.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 96.98% | 95.39% | -1.64% |
| Two or More Races | 0.89% | 1.78% | 100% |
| Asian/Pacific Islander | 0.89% | 1.19% | 33.71% |
| Hispanic | 0.89% | 0.74% | -16.85% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |