2000
#6,018
National surname rank
Recorded bearers 5,263
First available Census row
Per 100,000 1.95
Rare Last name
Claudio
An Italian surname derived from the Roman name Claudius, referring to a person from the Claudia family.
According to the 2020 US Census Bureau surname tables, roughly 7,834 Americans carry the last name Claudio. That puts it at #4,981 in the national surname ranking, appearing at a frequency of 2.29 per 100,000 people (about 1 in 43,752 residents).
This page is the full Name Census profile for the Claudio 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
7.8K
1 in 43,752
Census rank
#4,981
2020 decennial data
Per 100,000
2.3
Frequency rate
Recorded bearers
6.8K
rare in the US
Popularity narrative
The Census Bureau recorded 6,832 bearers of the surname Claudio in its 2020 decennial surname file. At a rate of 2.29 per 100,000 residents, it holds the 4981st position in the national surname ranking.
Among Census respondents with the surname Claudio, the largest self-reported group is Hispanic at 82.0%. The next largest groups are White (10.3%) and Asian/Pacific Islander (5.8%).
Origin
Meaning and origin of Claudio
The surname Claudio has its origins in ancient Rome, derived from the Roman praenomen Claudius, which was a prominent patrician family name. This name is believed to have originated from the Latin word "claudus," meaning "lame" or "limping."
The Claudii were a highly influential gens (clan) in ancient Rome, and many notable figures bore this name, including several Roman emperors. One of the most famous was Tiberius Claudius Nero Germanicus, better known as Claudius, who ruled as Roman emperor from 41 to 54 AD.
As the Roman Empire expanded and conquered territories, the name Claudius spread throughout Europe and eventually evolved into various spellings, including Claudio in Italian, Claudi in Catalan, and Claudio or Cláudio in Spanish and Portuguese.
In the Middle Ages, the Claudio surname can be found in historical records and manuscripts from various regions of Italy, particularly in the northern regions. One notable example is the 13th-century Italian scholar and poet, Claudio Tolomei, who was born in Siena in 1492 and died in Rome in 1556.
Another early recorded instance of the Claudio surname is found in the "Codice Diplomatico Longobardo" (Lombard Diplomatic Code), a collection of historical documents from the Lombard period in Italy, dating back to the 6th to 8th centuries.
During the Renaissance period, the Claudio surname gained prominence in various parts of Italy, with several notable figures bearing this name. One such individual was Claudio Merulo, an Italian composer and organist who lived from 1533 to 1604 and was renowned for his contributions to the development of the Renaissance keyboard repertoire.
In Spain, the Claudio surname can be traced back to the 15th century, with records indicating its presence in regions such as Catalonia and Aragon. One notable figure was Claudio Coello, a Spanish painter who lived from 1642 to 1693 and was renowned for his religious and court paintings during the Spanish Golden Age.
In Portugal, the Claudio surname has been present since at least the 16th century, with records showing its use in various regions. One notable figure was Claudio Lagrange, a Portuguese mathematician and astronomer who lived from 1637 to 1692 and made significant contributions to the study of celestial mechanics.
Throughout history, the Claudio surname has been borne by many other notable individuals, including the Italian composer Claudio Monteverdi (1567-1643), the French philosopher and mathematician René Descartes (1596-1650), and the Italian physicist Enrico Fermi (1901-1954).
Demographics
Ancestry and ethnicity for Claudio
Among Census respondents with the surname Claudio, the largest self-reported group is Hispanic at 82.0%. The next largest groups are White (10.3%) and Asian/Pacific Islander (5.8%).
The bar chart below shows how Claudio 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 Claudio surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino82.0% · 5,604
- White10.3% · 701
- Asian and Pacific Islander5.8% · 397
- Black or African American0.9% · 63
- Two or more races0.9% · 60
- American Indian and Alaska Native0.1% · 7
Timeline
Historical Census data for Claudio
Claudio 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
#5,224
National surname rank
Recorded bearers 6,679
+1,416 bearers (+26.9%)
Per 100,000 2.26
Rank movement Up 794 places
2020
#4,981
National surname rank
Recorded bearers 6,832
+153 bearers (+2.3%)
Per 100,000 2.29
Rank movement Up 243 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #6,018 | 5,263 | 1.95 | First available Census row | First available Census row |
| 2010 | #5,224 | 6,679 | 2.26 | +1,416 bearers (+26.9%) | Up 794 places |
| 2020 | #4,981 | 6,832 | 2.29 | +153 bearers (+2.3%) | Up 243 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 Claudio 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 | #5,224 | #4,981 | 4.7% |
| Count | 6,679 | 6,832 | 2.3% |
| Per 100K | 2.26 | 2.29 | 1.1% |
Between the 2010 and 2020 Census, the number of Claudio bearers went from 6,679 to 6,832 (+2.3% change). The surname moved up 243 positions in the national ranking, going from #5,224 to #4,981.
FAQ
Claudio surname: questions and answers
How many people in the U.S. have the surname Claudio?
Name Census estimates that about 7,834 living Americans carry the surname Claudio. Using the current population baseline, that works out to roughly 1 in 43,752 residents.
How common is Claudio?
Claudio ranks #4,981 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 2.29 per 100,000 residents, which is about 2 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 6,832 people with the surname Claudio. That is different from the site's living-bearer estimate (7,834), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 2.29 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 2.29 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 2 of them to have the surname Claudio.
Has Claudio become more or less common over time?
Between 2010 and 2020, the surname Claudio went from 6,679 recorded bearers to 6,832. That is an increase of 153 (+2.3%). In the national ranking it rose from #5,224 to #4,981.
What does the Census say about the background of Claudio?
Among Census respondents with the surname Claudio, the largest self-reported group is Hispanic at 82.0%. The next largest groups are White (10.3%) and Asian/Pacific Islander (5.8%). 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 Claudio in the 2020 Census, accounting for 82.0% (5,604 people in the source table).
What is the full ancestry breakdown?
Claudio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (82.0%), White (10.3%), Asian/Pacific Islander (5.8%). 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 Claudio (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 Claudio mean?
An Italian surname derived from the Roman name Claudius, referring to a person from the Claudia family. 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 Claudio (2.29 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 are called Claudio?
Our sister site HowManyOfMe.org answers how many Americans have the surname Claudio at a glance, with the living-bearer count up front.