2000
#146,011
National surname rank
Recorded bearers 104
First available Census row
Per 100,000 0.04
Very Rare Last name
Quaglio
An Italian surname derived from a dialect word meaning "quail".
According to the 2020 US Census Bureau surname tables, roughly 126 Americans carry the last name Quaglio. That puts it at #149,446 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,720,273 residents).
This page is the full Name Census profile for the Quaglio 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
126
1 in 2,720,273
Census rank
#149,446
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
110
very rare in the US
Popularity narrative
The Census Bureau recorded 110 bearers of the surname Quaglio in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 149446th position in the national surname ranking.
Among Census respondents with the surname Quaglio, the largest self-reported group is White at 90.9%. The next largest groups are Hispanic (7.3%) and Black (0.9%).
Origin
Meaning and origin of Quaglio
The surname Quaglio originates from Italy and can be traced back to the medieval era. It is believed to have derived from the Italian word "quagliaro," which means "a place where quails breed." This suggests that the name may have been initially given to someone who lived near or worked in an area where quails were abundant.
One of the earliest recorded instances of the Quaglio surname appears in the historic records of the city of Mantua, located in the Lombardy region of northern Italy. A document from the 13th century mentions a certain Guglielmo Quaglio, who was a landowner and farmer in the region.
In the 14th century, the name Quaglio was found in the archives of the city of Verona, where a merchant named Nicolo Quaglio was recorded as a member of the local guild of traders. This suggests that the surname had spread to different parts of northern Italy by that time.
During the Renaissance period, the Quaglio family gained prominence in the arts. Antonio Maria Quaglio (1535-1613) was a renowned painter and architect from the city of Como. He was known for his frescoes and architectural designs, and his works can be seen in various churches and palaces throughout Italy.
Another notable figure with the Quaglio surname was Giovanni Battista Quaglio (1668-1737), a celebrated Italian architect and painter from the city of Milan. He was commissioned by several European rulers, including the King of Prussia and the Elector of Bavaria, to design and decorate their palaces and residences.
In the 19th century, the Quaglio family produced several accomplished musicians. Francesco Quaglio (1804-1873) was an Italian composer and conductor who composed operas and ballet music. His brother, Giacomo Quaglio (1809-1890), was a renowned violinist and composer who spent much of his career performing and teaching in Germany.
Throughout its history, the Quaglio surname has been spelled in various ways, including Quaglia, Quagli, and Quaglino, reflecting regional variations and linguistic influences. While the name originated in Italy, it has since spread to other parts of the world through migration and cultural exchange.
Demographics
Ancestry and ethnicity for Quaglio
Among Census respondents with the surname Quaglio, the largest self-reported group is White at 90.9%. The next largest groups are Hispanic (7.3%) and Black (0.9%).
The bar chart below shows how Quaglio 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 Quaglio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.9% · 100
- Hispanic or Latino7.3% · 8
- Black or African American0.9% · 1
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Quaglio
Quaglio 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
#159,712
National surname rank
Recorded bearers 101
-3 bearers (-2.9%)
Per 100,000 0.03
Rank movement Down 13,701 places
2020
#149,446
National surname rank
Recorded bearers 110
+9 bearers (+8.9%)
Per 100,000 0.04
Rank movement Up 10,266 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #146,011 | 104 | 0.04 | First available Census row | First available Census row |
| 2010 | #159,712 | 101 | 0.03 | -3 bearers (-2.9%) | Down 13,701 places |
| 2020 | #149,446 | 110 | 0.04 | +9 bearers (+8.9%) | Up 10,266 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 Quaglio 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 | #159,712 | #149,446 | 6.4% |
| Count | 101 | 110 | 8.9% |
| Per 100K | 0.03 | 0.04 | 22.7% |
Between the 2010 and 2020 Census, the number of Quaglio bearers went from 101 to 110 (+8.9% change). The surname moved up 10,266 positions in the national ranking, going from #159,712 to #149,446.
FAQ
Quaglio surname: questions and answers
How many people in the U.S. have the surname Quaglio?
Name Census estimates that about 126 living Americans carry the surname Quaglio. Using the current population baseline, that works out to roughly 1 in 2,720,273 residents.
How common is Quaglio?
Quaglio ranks #149,446 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 110 people with the surname Quaglio. That is different from the site's living-bearer estimate (126), 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 Quaglio.
Has Quaglio become more or less common over time?
Between 2010 and 2020, the surname Quaglio went from 101 recorded bearers to 110. That is an increase of 9 (+8.9%). In the national ranking it rose from #159,712 to #149,446.
What does the Census say about the background of Quaglio?
Among Census respondents with the surname Quaglio, the largest self-reported group is White at 90.9%. The next largest groups are Hispanic (7.3%) and Black (0.9%). 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 Quaglio in the 2020 Census, accounting for 90.9% (100 people in the source table).
What is the full ancestry breakdown?
Quaglio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.9%), Hispanic (7.3%), Black (0.9%). 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 Quaglio (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 Quaglio mean?
An Italian surname derived from a dialect word meaning "quail". 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 Quaglio (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 Americans have the surname Quaglio?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.