2000
#141,788
National surname rank
Recorded bearers 108
First available Census row
Per 100,000 0.04
Very Rare Last name
Arnaudo
An Italian surname derived from a nickname meaning "bold" or "audacious."
According to the 2020 US Census Bureau surname tables, roughly 130 Americans carry the last name Arnaudo. That puts it at #147,221 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,636,572 residents).
This page is the full Name Census profile for the Arnaudo 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
130
1 in 2,636,572
Census rank
#147,221
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
113
very rare in the US
Popularity narrative
The Census Bureau recorded 113 bearers of the surname Arnaudo in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147221st position in the national surname ranking.
Among Census respondents with the surname Arnaudo, the largest self-reported group is White at 90.3%. The next largest groups are Hispanic (9.7%).
Origin
Meaning and origin of Arnaudo
The surname Arnaudo originated in Italy, specifically in the northwestern regions of Piedmont and Liguria. It is believed to have derived from the Germanic personal name Arnald or Arnaldo, which means "rules like an eagle." This name was introduced to Italy during the Barbarian invasions in the 5th and 6th centuries.
The earliest recorded instances of the name can be traced back to the 11th century in various legal and ecclesiastical documents from the region. One notable example is a certain Arnaldo de Ceva, who was mentioned in a charter from the year 1081 as a landowner in the town of Ceva, located in the province of Cuneo, Piedmont.
In the 12th century, the name appeared in the form of "Arnaudus" in a cartulary from the Abbey of San Solutore in Turin. This document included references to individuals with the surname, such as Oberto Arnaudus and Guglielmo Arnaudus, who were members of prominent local families.
During the 13th century, the name was spelled in various ways, including "Arnaldi," "Arnaldo," and "Arnaut." One notable figure from this period was Giacomo Arnaldi, a merchant from Genoa who was involved in trade with the Byzantine Empire.
The 14th century saw the emergence of several notable individuals bearing the surname Arnaudo. One of them was Pietro Arnaudo, a jurist and legal scholar from Savona, who served as a counselor to the Republic of Genoa in the late 1300s.
In the 15th century, the name gained prominence in the region of Piedmont, where it was associated with several noble families. One such family was the Arnaudo di Castellamonte, who held lands and titles in the town of Castellamonte, near Turin. Francesco Arnaudo, born in 1432, was a member of this family and served as a military commander in the service of the Duchy of Savoy.
As the centuries progressed, the surname Arnaudo continued to be found throughout northwestern Italy, particularly in the regions of Piedmont, Liguria, and neighboring areas. Notable figures from later periods include Bartolomeo Arnaudo, a prominent architect from Cuneo who lived in the late 16th century, and Cesare Arnaudo, a lawyer and politician from Turin who served as a deputy in the Parliament of the Kingdom of Sardinia in the mid-19th century.
Demographics
Ancestry and ethnicity for Arnaudo
Among Census respondents with the surname Arnaudo, the largest self-reported group is White at 90.3%. The next largest groups are Hispanic (9.7%).
The bar chart below shows how Arnaudo 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 Arnaudo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.3% · 102
- Hispanic or Latino9.7% · 11
Timeline
Historical Census data for Arnaudo
Arnaudo appears in 3 published Census surname files: 2000, 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2010
#148,347
National surname rank
Recorded bearers 111
+3 bearers (+2.8%)
Per 100,000 0.04
Rank movement Down 6,559 places
2020
#147,221
National surname rank
Recorded bearers 113
+2 bearers (+1.8%)
Per 100,000 0.04
Rank movement Up 1,126 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #141,788 | 108 | 0.04 | First available Census row | First available Census row |
| 2010 | #148,347 | 111 | 0.04 | +3 bearers (+2.8%) | Down 6,559 places |
| 2020 | #147,221 | 113 | 0.04 | +2 bearers (+1.8%) | Up 1,126 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 Arnaudo 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 | #148,347 | #147,221 | 0.8% |
| Count | 111 | 113 | 1.8% |
| Per 100K | 0.04 | 0.04 | -5.5% |
Between the 2010 and 2020 Census, the number of Arnaudo bearers went from 111 to 113 (+1.8% change). The surname moved up 1,126 positions in the national ranking, going from #148,347 to #147,221.
FAQ
Arnaudo surname: questions and answers
How many people in the U.S. have the surname Arnaudo?
Name Census estimates that about 130 living Americans carry the surname Arnaudo. Using the current population baseline, that works out to roughly 1 in 2,636,572 residents.
How common is Arnaudo?
Arnaudo ranks #147,221 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 113 people with the surname Arnaudo. That is different from the site's living-bearer estimate (130), 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 Arnaudo.
Has Arnaudo become more or less common over time?
Between 2010 and 2020, the surname Arnaudo went from 111 recorded bearers to 113. That is an increase of 2 (+1.8%). In the national ranking it rose from #148,347 to #147,221.
What does the Census say about the background of Arnaudo?
Among Census respondents with the surname Arnaudo, the largest self-reported group is White at 90.3%. The next largest groups are Hispanic (9.7%). 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?
White is the largest self-reported group for the surname Arnaudo in the 2020 Census, accounting for 90.3% (102 people in the source table).
What is the full ancestry breakdown?
Arnaudo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.3%), Hispanic (9.7%). 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 Arnaudo (2000, 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 Arnaudo mean?
An Italian surname derived from a nickname meaning "bold" or "audacious." 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 Arnaudo (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 share the surname Arnaudo?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.