2010
#153,769
National surname rank
Recorded bearers 106
First available Census row
Per 100,000 0.04
Very Rare Last name
Auz
A surname indicating a person lived near or came from the village of Auz.
According to the 2020 US Census Bureau surname tables, roughly 138 Americans carry the last name Auz. That puts it at #142,049 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,483,727 residents).
This page is the full Name Census profile for the Auz 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
138
1 in 2,483,727
Census rank
#142,049
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
120
very rare in the US
Popularity narrative
The Census Bureau recorded 120 bearers of the surname Auz in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 142049th position in the national surname ranking.
Among Census respondents with the surname Auz, the largest self-reported group is Hispanic at 69.2%. The next largest groups are White (26.7%) and Asian/Pacific Islander (3.3%).
Origin
Meaning and origin of Auz
The surname Auz is believed to have originated in the region of Abruzzo, Italy, dating back to the 13th century. It is derived from the Italian word "auzzo," which means "a small brook or stream," suggesting that the name may have been initially adopted by families living near a small watercourse.
One of the earliest recorded instances of the name Auz can be found in the Codice Diplomatico di Abruzzo, a collection of historical documents from the region, dated around 1280. This document mentions a certain "Petrus de Auzzo," indicating the presence of the surname in the area during that time period.
In the 14th century, the name Auz appears in several legal documents and records from the town of Sulmona, located in the province of L'Aquila, Abruzzo. These documents refer to individuals with variations of the name, such as "Auzo," "Auzi," and "Auzzi."
During the Renaissance period, the Auz family gained prominence in the region of Abruzzo. One notable figure from this time was Giovanni Battista Auz (1510-1582), a renowned poet and scholar who was born in Sulmona. His works, including a collection of sonnets and odes, were widely acclaimed and contributed to the cultural landscape of the era.
Another prominent individual bearing the surname Auz was Vincenzo Auz (1625-1691), a influential lawyer and jurist from the town of Chieti, Abruzzo. He served as a legal advisor to several noble families and played a significant role in shaping the legal system of the region during the 17th century.
In the 18th century, the name Auz appeared in the records of the town of Pescara, Abruzzo. One notable figure from this time was Antonio Auz (1735-1810), a successful merchant and landowner who contributed significantly to the local economy and trade.
As the name Auz spread across Italy and beyond, it underwent various spelling variations, such as "Auzi," "Auzzi," and "Auzzio." These variations were often influenced by regional dialects and local pronunciations.
Throughout history, several individuals with the surname Auz have made notable contributions in various fields, including literature, law, and commerce. However, it is important to note that the name's origins and earliest recorded instances can be traced back to the region of Abruzzo, Italy, where it has a rich historical legacy.
Demographics
Ancestry and ethnicity for Auz
Among Census respondents with the surname Auz, the largest self-reported group is Hispanic at 69.2%. The next largest groups are White (26.7%) and Asian/Pacific Islander (3.3%).
The bar chart below shows how Auz 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 Auz surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino69.2% · 83
- White26.7% · 32
- Asian and Pacific Islander3.3% · 4
- American Indian and Alaska Native0.8% · 1
Timeline
Historical Census data for Auz
Auz 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
#142,049
National surname rank
Recorded bearers 120
+14 bearers (+13.2%)
Per 100,000 0.04
Rank movement Up 11,720 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #153,769 | 106 | 0.04 | First available Census row | First available Census row |
| 2020 | #142,049 | 120 | 0.04 | +14 bearers (+13.2%) | Up 11,720 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 Auz 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 | #153,769 | #142,049 | 7.6% |
| Count | 106 | 120 | 13.2% |
| Per 100K | 0.04 | 0.04 | 0.4% |
Between the 2010 and 2020 Census, the number of Auz bearers went from 106 to 120 (+13.2% change). The surname moved up 11,720 positions in the national ranking, going from #153,769 to #142,049.
FAQ
Auz surname: questions and answers
How many people in the U.S. have the surname Auz?
Name Census estimates that about 138 living Americans carry the surname Auz. Using the current population baseline, that works out to roughly 1 in 2,483,727 residents.
How common is Auz?
Auz ranks #142,049 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 120 people with the surname Auz. That is different from the site's living-bearer estimate (138), 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 Auz.
Has Auz become more or less common over time?
Between 2010 and 2020, the surname Auz went from 106 recorded bearers to 120. That is an increase of 14 (+13.2%). In the national ranking it rose from #153,769 to #142,049.
What does the Census say about the background of Auz?
Among Census respondents with the surname Auz, the largest self-reported group is Hispanic at 69.2%. The next largest groups are White (26.7%) and Asian/Pacific Islander (3.3%). 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 Auz in the 2020 Census, accounting for 69.2% (83 people in the source table).
What is the full ancestry breakdown?
Auz appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (69.2%), White (26.7%), Asian/Pacific Islander (3.3%). 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 Auz (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 Auz mean?
A surname indicating a person lived near or came from the village of Auz. 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 Auz (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 Auz?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.