Explore the Family Name De Castro
The meaning of De Castro
Galician and Portuguese: habitational name for someone from any of various places called with castro ‘castle, fortress’ (see Castro), with the preposition de ‘of, from’. Some characteristic forenames: Spanish Jose, Carlos, Luis, Armando, Mario, Alfredo, Jorge, Julio, Manuel, Ricardo, Rolando, Alvaro.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name De Castro in the United States?
Based on data obtained from the Decennial U.S. Census, the popularity of the surname De Castro has been steadily increasing in the United States. In 2000, De Castro was ranked 7,265th most common name, but by 2010 it had risen to the 6,361st position, indicating a positive change of 12.44%. The number of individuals bearing this surname also increased from 4,235 in 2000 to 5,354 in 2010, reflecting a significant growth of 26.42% over the decade. The proportion per 100,000 people with this surname also increased from 1.57 to 1.82 during the same period.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #7,265 | #6,361 | 12.44% |
| Count | 4,235 | 5,354 | 26.42% |
| Proportion per 100k | 1.57 | 1.82 | 15.92% |
Race and Ethnicity of people with the last name De Castro
When examining the ethnic identity linked to the surname De Castro, the Decennial U.S. Census reveals some shifts between 2000 and 2010. A majority of individuals identified as Asian/Pacific Islander or White, with proportions increasing for the former (34.85% to 37.06%) and slightly declining for the latter (34.71% to 32.72%). Meanwhile, those identifying as Hispanic saw a modest increase from 22.13% to 23.50%, while those identifying as Black also experienced a slight rise from 3.45% to 3.66%. However, the proportion of individuals with this surname identifying with two or more races declined significantly from 4.63% to 2.90%, and those identifying as American Indian and Alaskan Native dropped from 0.24% to 0.17% over the same time frame.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Asian/Pacific Islander | 34.85% | 37.06% | 6.34% |
| White | 34.71% | 32.72% | -5.73% |
| Hispanic | 22.13% | 23.5% | 6.19% |
| Black | 3.45% | 3.66% | 6.09% |
| Two or More Races | 4.63% | 2.9% | -37.37% |
| American Indian and Alaskan Native | 0.24% | 0.17% | -29.17% |
De Castro 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 De Castro is Spanish & Portuguese, which comprises 38.6% of all ancestry found in people with the surname. The next two most common ancestries are Filipino & Austronesian (21.9%) and British & Irish (7.2%). Additional ancestries include Indigenous American, French & German, Italian, Angolan & Congolese, and Eastern European.
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| ANCESTRY BREAKDOWN | COMPOSITION |
|---|---|
| Spanish & Portuguese | 38.6% |
| Filipino & Austronesian | 21.9% |
| British & Irish | 7.2% |
| Other | 32.4% |
Possible origins of the surname De Castro
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 De Castro have recent ancestry locations in the Philippines and Portugal.
| RECENT ANCESTRY Location | Percentage |
|---|---|
| Bicol, Philippines | 25.90% |
| Calabarzon, Philippines | 25.90% |
| Central Luzon, Philippines | 25.90% |
| Central Visayas, Philippines | 25.90% |
| Eastern Visayas, Philippines | 25.90% |
What De Castro 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 De Castro is R-DF27, which is predominantly found among people with European ancestry. Haplogroup R-DF27 is descended from haplogroup R-M343. Other common haplogroups include O-F706 and J-M410, which are predominantly found among people with East Asian & Indigenous American and European ancestry. Other surnames with similar common haplogroups are: Paulino, Aquino, Baptista, Francisco, Miguel, Rojo, Gregor, Valerio, De Jesus, Borja.
The most common maternal haplogroups of people with De Castro surname are: M, H1, H. These most commonly trace back to individuals of European ancestry.
Paternal Haplogroup Origins R-M343Your maternal lineage may be linked to the ancient people of the Indian subcontinent
While Haplogroup M is widespread throughout South and East Asia, it is more diverse on the Indian sub-continent than anywhere else in the world. The high degree of diversity of M in India is likely tied to its ancient arrival here nearly 50,000 years ago. In addition to M2, which is found throughout the subcontinent, there are dozens of haplogroups branching off of M that exist in India. These branches are often connected to specific regions, tribes, or ethnic groups. For example, haplogroup M18 is found among the Oraon peoples of eastern India and Bangladesh, while haplogroup M41 is common among the Pardhan speakers of eastern India, and haplogroup M31a can be found on the Andaman Islands, just off the southeast coast of India.
What do people with the surname De Castro 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.
"De Castro" Surname 30.4%
23andMe Users 41.3%
Traits
Cheek Dimples
Small indentations that appear on the cheeks when a person smiles.
"De Castro" Surname 53.8%
23andMe Users 37.6%
Wellness
Migraine
A severe headache characterized by intense pain, sensitivity to light and sound, and often accompanied by nausea and vomiting.
"De Castro" Surname 16.9%
23andMe Users 16.4%
Are health conditions linked to the last name De Castro?
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 De Castro are shown below. Important Note: not everyone with a disease allele will develop these health condition