Explore the Family Name Casey
The meaning of Casey
1. Irish: shortened Anglicized form of Gaelic Ó Cathasaigh ‘descendant of Cathasach’, a byname meaning ‘vigilant’ or ‘noisy’. Compare Caissie. 2. English and Irish (of Norman origin): from Old French Cauceis, denoting someone from the Pays de Caux in Normandy. Some characteristic forenames: Irish Brendan, Donal, Ciaran, Dermot, John Patrick, Liam, Aileen, Cait, Caitlyn, Conor, Eamon, Joe Pat.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Casey in the United States?
The surname Casey, based on the Decennial U.S. Census data, has seen a fluctuation in popularity in the United States between 2000 and 2010. In 2000, it was ranked 463rd most common name, but dropped to the 504th position by 2010, marking a decrease of 8.86%. Despite this drop in rank, the actual number of people with the Casey surname increased from 64,815 in 2000 to 66,556 in 2010, which is an increase of 2.69%. However, its proportion per 100,000 people decreased by 6.12%, going from 24.03 to 22.56.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #463 | #504 | -8.86% |
| Count | 64,815 | 66,556 | 2.69% |
| Proportion per 100k | 24.03 | 22.56 | -6.12% |
Race and Ethnicity of people with the last name Casey
In regards to ethnicity, the Casey surname showed a diverse range according to the Decennial U.S. Census data. The majority identified as White, but there was a slight decrease in this group from 88.51% in 2000 to 86.89% in 2010. The percentage of those identifying as Black slightly increased from 7.25% to 7.47%. Interestingly, significant growth was noted among those of Hispanic ethnicity, which increased by 60.67% over the decade. There were also minor increases in the Asian/Pacific Islander group and those identifying as two or more races, with increments of 34.69% and 17.5% respectively. The American Indian and Alaskan Native group saw a modest increase of 6.06%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 88.51% | 86.89% | -1.83% |
| Black | 7.25% | 7.47% | 3.03% |
| Hispanic | 1.5% | 2.41% | 60.67% |
| Two or More Races | 1.6% | 1.88% | 17.5% |
| American Indian and Alaskan Native | 0.66% | 0.7% | 6.06% |
| Asian/Pacific Islander | 0.49% | 0.66% | 34.69% |
Casey ancestry composition
23andMe computes an ancestry breakdown for each customer. People may have ancestry from just one population or they may have ancestry from several populations. The most commonly-observed ancestry found in people with the surname Casey is British & Irish, which comprises 60.6% of all ancestry found in people with the surname. The next two most common ancestries are French & German (18.1%) and Eastern European (4.6%). Additional ancestries include Italian, Scandinavian, Spanish & Portuguese, Ashkenazi Jewish, and Indigenous American.
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| ANCESTRY BREAKDOWN | COMPOSITION |
|---|---|
| British & Irish | 60.6% |
| French & German | 18.1% |
| Eastern European | 4.6% |
| Other | 16.7% |
Possible origins of the surname Casey
Your DNA provides clues about where your recent ancestors may have lived. Having many distant relatives in the same location suggests that you may all share common ancestry there. Locations with many distant relatives can also be places where people have migrated recently, such as large cities. If a large number of individuals who share your surname have distant relatives in a specific area, it could indicate a connection between your surname and that location, stemming from either recent ancestral ties or migration.
Based on 23andMe data, people with last name Casey have recent ancestry locations in the United Kingdom of Great Britain and Northern Ireland and Ireland.
| RECENT ANCESTRY Location | Percentage |
|---|---|
| Greater London, United Kingdom | 88.70% |
| Greater Manchester, United Kingdom | 88.40% |
| Glasgow City, United Kingdom | 88.30% |
| Merseyside, United Kingdom | 88.10% |
| Tyne And Wear, United Kingdom | 87.80% |
What Casey haplogroups can tell you
Haplogroups are genetic population groups that share a common ancestor on either your paternal or maternal line. These paternal and maternal haplogroups shed light on your genetic ancestry and help tell the story of your family.
The top paternal haplogroup of people with the surname Casey is R-L21, which is predominantly found among people with European ancestry. Haplogroup R-L21 is descended from haplogroup R-M343. Other common haplogroups include R-Y4010 and R-CTS241, which are predominantly found among people with European and European ancestry. Other surnames with similar common haplogroups are: Slattery, Hogan, Madden, Obrien, O'Brien, Callahan, Lynch, Conner, Maloney, Connors.
The most common maternal haplogroups of people with Casey surname are: H1, T2b, H. These most commonly trace back to individuals of European ancestry.
Paternal Haplogroup Origins R-M343Your maternal lineage may be linked to Marie Antoinette
Because it is so dominant in the general European population, haplogroup H also appears quite frequently in the continent's royal houses. Marie Antoinette, an Austrian Hapsburg who married into the French royal family, inherited the haplogroup from her maternal ancestors. So did Prince Philip, Duke of Edinburgh, whose recorded genealogy traces his female line to Bavaria. Scientists also discovered that famed 16th century astronomer Nicolaus Copernicus traced his maternal lineages to haplogroup H.
What do people with the surname Casey have in common?
Spoiler alert: it's complicated. People with the same last name are usually no more genetically similar than a randomly sampled group of people from the same population. That said, people with the same surname are more likely to have similar ancestries than randomly sampled individuals. The reason is the tendency of people with similar cultural or geographical backgrounds to preferentially mate with one another. That's why people who share a surname may be more likely to share traits and tendencies in common than people within the general population. Check out the percentages below to see the prevalences of tastes, habits, and traits of people with your surname compared with prevalences among 23andMe users.
Preferences
Chocolate Ice Cream
Prefers chocolate flavored ice cream over other flavors.
"Casey" Surname 39.7%
23andMe Users 41.3%
Traits
Misophonia
When sounds made by others, like the sound of chewing or yawning, provoke strong emotional reactions in an individual.
"Casey" Surname 26.5%
23andMe Users 27.9%
Habits
Sugary Drink
Drinks one or more sugary drinks per day.
"Casey" Surname 19.0%
23andMe Users 21.1%
Wellness
Migraine
A severe headache characterized by intense pain, sensitivity to light and sound, and often accompanied by nausea and vomiting.
"Casey" Surname 17.6%
23andMe Users 16.4%
Are health conditions linked to the last name Casey?
The short answer is that, if there is an association between surname and health, it's usually more about your ancestry than your name. Individuals with a given surname are no more genetically similar than the general population but often have similar ancestries. The populations of people associated with those shared ancestries often have sets of genetic variations, also known as alleles, in common. Some of those alleles are associated with a greater likelihood of developing certain diseases.
Disease variant frequency by ancestry
Disease allele frequencies in populations associated with the surname Casey are shown below. Important Note: not everyone with a disease allele will develop these health condition