2010
#126,765
National surname rank
Recorded bearers 135
First available Census row
Per 100,000 0.05
Very Rare Last name
Bataz
A Basque surname derived from the Spanish word "bata" meaning a type of robe or garment.
According to the 2020 US Census Bureau surname tables, roughly 144 Americans carry the last name Bataz. That puts it at #137,553 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,380,238 residents).
This page is the full Name Census profile for the Bataz surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
144
1 in 2,380,238
Census rank
#137,553
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
126
very rare in the US
Popularity narrative
The Census Bureau recorded 126 bearers of the surname Bataz in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 137553rd position in the national surname ranking.
Among Census respondents with the surname Bataz, the largest self-reported group is Hispanic at 98.4%. The next largest groups are White (1.6%).
Origin
Meaning and origin of Bataz
The surname Bataz originates from the Basque region, straddling the border between Spain and France in the western Pyrenees mountains. It is believed to have emerged in the early medieval period, perhaps as early as the 8th or 9th century CE.
The name Bataz is thought to derive from the Basque word "bata", meaning "one" or "single", and may have been used to distinguish a single heir or the eldest son in a family. Alternatively, it could be linked to the Basque word "batasun", meaning "unity" or "union", suggesting the name may have been given to a peacemaker or someone who brought people together.
One of the earliest known records of the Bataz name appears in a 13th-century document from the town of Sare in the Basque province of Labourd, which refers to a certain Petri Bataz. In the 15th century, records show a Domingo Bataz was a landowner in the village of Ainhoa, also in Labourd.
A notable bearer of the Bataz name was Juan de Bataz, a Basque soldier who fought alongside the Spanish forces during the Spanish conquest of Mexico in the early 16th century. He participated in various battles and expeditions under the command of Hernán Cortés and was granted an encomienda (land grant) in recognition of his services.
Another historically significant figure was Domingo Bataz de Uriarte, a Basque merchant and ship owner who lived in the late 17th century. He was involved in the lucrative transatlantic trade between Spain and its American colonies, amassing considerable wealth through his business ventures.
In the 18th century, José Ignacio Bataz was a prominent Basque architect who designed several notable buildings in the city of San Sebastián, including the Baroque-style Santa María del Coro Church. His masterpiece was the Palacio de Insausti, a grand palace commissioned by a wealthy noble family.
During the 19th century, Ramón Bataz was a respected Basque linguist and scholar who made significant contributions to the study and preservation of the Basque language and culture. He published several works on Basque grammar, vocabulary, and literature, helping to promote awareness and appreciation of this unique linguistic heritage.
While the Bataz surname is relatively uncommon outside of the Basque region, it has been carried far and wide by Basque emigrants and their descendants over the centuries, with bearers of the name found in various parts of Spain, France, and even as far afield as Latin America and the United States.
Demographics
Ancestry and ethnicity for Bataz
Among Census respondents with the surname Bataz, the largest self-reported group is Hispanic at 98.4%. The next largest groups are White (1.6%).
The bar chart below shows how Bataz bearers described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Bataz surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino98.4% · 124
- White1.6% · 2
Timeline
Historical Census data for Bataz
Bataz appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#137,553
National surname rank
Recorded bearers 126
-9 bearers (-6.7%)
Per 100,000 0.04
Rank movement Down 10,788 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #126,765 | 135 | 0.05 | First available Census row | First available Census row |
| 2020 | #137,553 | 126 | 0.04 | -9 bearers (-6.7%) | Down 10,788 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Bataz surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #126,765 | #137,553 | -8.5% |
| Count | 135 | 126 | -6.7% |
| Per 100K | 0.05 | 0.04 | -15.7% |
Between the 2010 and 2020 Census, the number of Bataz bearers went from 135 to 126 (-6.7% change). The surname moved down 10,788 positions in the national ranking, going from #126,765 to #137,553.
FAQ
Bataz surname: questions and answers
How many people in the U.S. have the surname Bataz?
Name Census estimates that about 144 living Americans carry the surname Bataz. Using the current population baseline, that works out to roughly 1 in 2,380,238 residents.
How common is Bataz?
Bataz ranks #137,553 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.04 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 126 people with the surname Bataz. That is different from the site's living-bearer estimate (144), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.04 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.04 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Bataz.
Has Bataz become more or less common over time?
Between 2010 and 2020, the surname Bataz went from 135 recorded bearers to 126. That is a decrease of 9 (-6.7%). In the national ranking it fell from #126,765 to #137,553.
What does the Census say about the background of Bataz?
Among Census respondents with the surname Bataz, the largest self-reported group is Hispanic at 98.4%. The next largest groups are White (1.6%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
Hispanic is the largest self-reported group for the surname Bataz in the 2020 Census, accounting for 98.4% (124 people in the source table).
What is the full ancestry breakdown?
Bataz appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (98.4%), White (1.6%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Bataz (2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Bataz mean?
A Basque surname derived from the Spanish word "bata" meaning a type of robe or garment. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Bataz (0.04 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How many people have the surname Bataz?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.