Explore the Family Name Diaz

Discover your DNA and map your family history

Shop  23andMe

The meaning of Diaz

1. Spanish (Díaz): patronymic from the medieval personal name Didacus (see Diego). 2. Jewish (Sephardic): adoption of the Spanish surname (see 1 above) at the moment of conversion to Roman Catholicism. After the return to Judaism (generations later), some descendants retained the name their families used as Catholics. Some characteristic forenames: Spanish Jose, Juan, Carlos, Luis, Manuel, Jesus, Francisco, Jorge, Rafael, Miguel, Pedro, Roberto.

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name Diaz in the United States?

According to the Decennial U.S. Census data, the surname Diaz has seen a surge in popularity from 2000 to 2010. In 2000, Diaz ranked as the 73rd most common surname, but by 2010 it had climbed to the 55th position, representing an increase of 24.66%. The total count of individuals with this surname also rose significantly during this decade, with an impressive 38.08% growth rate, from 251,772 people in 2000 to 347,636 in 2010. Consequently, the proportion of this surname per 100,000 people increased by 26.27%, signifying its growing prevalence.

20002010Change
Rank#73#5524.66%
Count251,772347,63638.08%
Proportion per 100k93.33117.8526.27%

Race and Ethnicity of people with the last name Diaz

In terms of ethnicity, the Decennial U.S. Census data depicts that the majority of individuals with the Diaz surname identify as Hispanic. This group grew slightly from 91.22% in 2000 to 92.56% in 2010, a change of 1.47%. Meanwhile, the percentage of Diaz's who identify as White decreased by 15.88%, from 6.17% in 2000 to 5.19% in 2010. There were minor changes among other ethnic identities as well. The Asian/Pacific Islander group remained stable at 1.19%, while those identifying as two or more races saw a decline of 46.81%. Similarly, those identifying as Black and American Indian and Alaskan Native experienced a decrease of 10.96% and 27.27% respectively.

20002010Change
Hispanic91.22%92.56%1.47%
White6.17%5.19%-15.88%
Asian/Pacific Islander1.19%1.19%0%
Black0.73%0.65%-10.96%
Two or More Races0.47%0.25%-46.81%
American Indian and Alaskan Native0.22%0.16%-27.27%

diaz 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 Diaz is Spanish & Portuguese, which comprises 45.1% of all ancestry found in people with the surname. The next two most common ancestries are Indigenous American (22.9%) and British & Irish (8.7%). Additional ancestries include French & German, Italian, Senegambian & Guinean, Filipino & Austronesian, and Nigerian.

Ready to learn more about your ancestry? Get the most comprehensive ancestry breakdown on the market by taking our DNA test. Shop 23andMe

ANCESTRY BREAKDOWNCOMPOSITION
Spanish & Portuguese45.1%
Indigenous American22.9%
British & Irish8.7%
Other23.3%
diaz

Possible origins of the surname diaz

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 Diaz have recent ancestry locations all within Mexico.

RECENT ANCESTRY LocationPercentage
Sonora, Mexico40.50%
Tamaulipas, Mexico40.50%
Nuevo Leon, Mexico40.50%
Michoacan, Mexico40.50%
Mexico City, Mexico40.50%

What diaz 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 Diaz is R-P311, which is predominantly found among people with European ancestry. Haplogroup R-P311 is descended from haplogroup R-M343. Other common haplogroups include Q-M3 and R-L51, which are predominantly found among people with East Asian & Indigenous American and European ancestry. Other surnames with similar common haplogroups are: Rodriguez, Gonzalez, Silva, Torres, Ruiz, Moreno, Gomez, Alvarez, Acosta, Romero.

The most common maternal haplogroups of people with Diaz surname are: A2, B2, H. These most commonly trace back to individuals of European ancestry.

diazPaternal Haplogroup Origins R-M343

Your maternal lineage may be linked to some of the first Americans

Though the Ice Age was beginning to retreat when your A2 ancestors first entered North America, there were still massive barriers blocking their way. Glaciers and inhospitable climate covered much of the continent, blocking entry into the interior. Nonetheless, researchers have found evidence that a wave of American founders migrated over 13,000 kilometers to reach southern Chile in only 2,000 years, a blink of an eye in the story of human migration! Their highway to the south was the coast of the Pacific, stocked with fish, diverse marine mammals, and other valuable resources in the rich kelp forests of the upper latitudes and in the abundant fresh-water rivers near the equator. Because of this rapid movement south, the A2 haplogroup and its diverse branches are found throughout North and South America.

Cannon Beach, Oregon

What do people with the surname Diaz 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

Diaz

Chocolate Ice Cream

Prefers chocolate flavored ice cream over other flavors.

"Diaz" Surname 35.8%

23andMe Users 41.3%

Traits

Diaz

Misophonia

When sounds made by others, like the sound of chewing or yawning, provoke strong emotional reactions in an individual.

"Diaz" Surname 35.0%

23andMe Users 27.9%

Habits

Diaz

Sugary Drink

Drinks one or more sugary drinks per day.

"Diaz" Surname 21.2%

23andMe Users 21.1%

Wellness

Diaz

Migraine

A severe headache characterized by intense pain, sensitivity to light and sound, and often accompanied by nausea and vomiting.

"Diaz" Surname 13.8%

23andMe Users 16.4%