2000
#133,114
National surname rank
Recorded bearers 117
First available Census row
Per 100,000 0.04
Very Rare Last name
Quadrino
An Italian surname derived from the word for "small coin" or "quarter".
According to the 2020 US Census Bureau surname tables, roughly 136 Americans carry the last name Quadrino. That puts it at #142,788 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,520,252 residents).
This page is the full Name Census profile for the Quadrino 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
136
1 in 2,520,252
Census rank
#142,788
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
119
very rare in the US
Popularity narrative
The Census Bureau recorded 119 bearers of the surname Quadrino in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 142788th position in the national surname ranking.
Among Census respondents with the surname Quadrino, the largest self-reported group is White at 90.8%. The next largest groups are Hispanic (5.9%) and Asian/Pacific Islander (1.7%).
Origin
Meaning and origin of Quadrino
The surname Quadrino has its origins in Italy, specifically in the northern regions of the country. It is believed to have emerged during the 13th or 14th century. The name is derived from the Italian word "quadro," which means square or cube, suggesting that it may have been an occupational surname for someone who worked with or produced square or cube-shaped items.
One of the earliest recorded instances of the name Quadrino can be traced back to a document from the city of Verona in 1389, where a certain Giovanni Quadrino was mentioned as a landowner. Another early reference is found in the records of the Republic of Venice, where a merchant named Marco Quadrino was active in the 15th century.
In the 16th century, a notable figure with the surname Quadrino was Girolamo Quadrino, a Venetian scholar and humanist who lived from 1520 to 1590. He was known for his contributions to the study of ancient Greek and Latin literature.
During the 17th century, the Quadrino family appears to have had a presence in the region of Lombardy. Francesco Quadrino (1605-1672) was a prominent architect from Milan who designed several churches and palaces in the city.
Moving into the 18th century, Pietro Quadrino (1718-1789) was a distinguished mathematician and astronomer from Turin. He made significant contributions to the field of celestial mechanics and was a member of the prestigious Accademia delle Scienze di Torino.
In the 19th century, Giuseppe Quadrino (1826-1898) was an Italian painter known for his landscapes and genre scenes. He was born in the town of Casalmonferrato and studied at the Accademia di Belle Arti di Brera in Milan.
Another notable figure from this period was the poet and writer Cesare Quadrino (1848-1921), who hailed from the town of Vigevano in Lombardy. His works often explored themes of love, nature, and the human condition.
While the surname Quadrino is not as common today as it once was, it continues to have a presence in various parts of Italy, particularly in the northern regions where it originated. The name has also spread to other countries through immigration, although its roots can be traced back to its Italian ancestry.
Demographics
Ancestry and ethnicity for Quadrino
Among Census respondents with the surname Quadrino, the largest self-reported group is White at 90.8%. The next largest groups are Hispanic (5.9%) and Asian/Pacific Islander (1.7%).
The bar chart below shows how Quadrino 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 Quadrino surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.8% · 108
- Hispanic or Latino5.9% · 7
- Asian and Pacific Islander1.7% · 2
- Black or African American0.8% · 1
- Two or more races0.8% · 1
Timeline
Historical Census data for Quadrino
Quadrino 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
#134,712
National surname rank
Recorded bearers 125
+8 bearers (+6.8%)
Per 100,000 0.04
Rank movement Down 1,598 places
2020
#142,788
National surname rank
Recorded bearers 119
-6 bearers (-4.8%)
Per 100,000 0.04
Rank movement Down 8,076 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #133,114 | 117 | 0.04 | First available Census row | First available Census row |
| 2010 | #134,712 | 125 | 0.04 | +8 bearers (+6.8%) | Down 1,598 places |
| 2020 | #142,788 | 119 | 0.04 | -6 bearers (-4.8%) | Down 8,076 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 Quadrino 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 | #134,712 | #142,788 | -6.0% |
| Count | 125 | 119 | -4.8% |
| Per 100K | 0.04 | 0.04 | -0.5% |
Between the 2010 and 2020 Census, the number of Quadrino bearers went from 125 to 119 (-4.8% change). The surname moved down 8,076 positions in the national ranking, going from #134,712 to #142,788.
FAQ
Quadrino surname: questions and answers
How many people in the U.S. have the surname Quadrino?
Name Census estimates that about 136 living Americans carry the surname Quadrino. Using the current population baseline, that works out to roughly 1 in 2,520,252 residents.
How common is Quadrino?
Quadrino ranks #142,788 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 119 people with the surname Quadrino. That is different from the site's living-bearer estimate (136), 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 Quadrino.
Has Quadrino become more or less common over time?
Between 2010 and 2020, the surname Quadrino went from 125 recorded bearers to 119. That is a decrease of 6 (-4.8%). In the national ranking it fell from #134,712 to #142,788.
What does the Census say about the background of Quadrino?
Among Census respondents with the surname Quadrino, the largest self-reported group is White at 90.8%. The next largest groups are Hispanic (5.9%) and Asian/Pacific Islander (1.7%). 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 Quadrino in the 2020 Census, accounting for 90.8% (108 people in the source table).
What is the full ancestry breakdown?
Quadrino appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.8%), Hispanic (5.9%), Asian/Pacific Islander (1.7%). 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 Quadrino (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 Quadrino mean?
An Italian surname derived from the word for "small coin" or "quarter". 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 Quadrino (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 last name Quadrino?
You can see how many people are called Quadrino on our sister site HowManyOfMe.org — same data roots, lighter UI.