2000
#72,717
National surname rank
Recorded bearers 249
First available Census row
Per 100,000 0.09
Very Rare Last name
Queirolo
A surname indicating origins from the town of Queirolo in northern Italy.
According to the 2020 US Census Bureau surname tables, roughly 283 Americans carry the last name Queirolo. That puts it at #82,347 in the national surname ranking, appearing at a frequency of 0.08 per 100,000 people (about 1 in 1,211,146 residents).
This page is the full Name Census profile for the Queirolo 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
283
1 in 1,211,146
Census rank
#82,347
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
247
very rare in the US
Popularity narrative
The Census Bureau recorded 247 bearers of the surname Queirolo in its 2020 decennial surname file. At a rate of 0.08 per 100,000 residents, it holds the 82347th position in the national surname ranking.
Among Census respondents with the surname Queirolo, the largest self-reported group is White at 50.2%. The next largest groups are Hispanic (46.2%) and Two or More Races (2.8%).
Origin
Meaning and origin of Queirolo
The surname Queirolo has its origins in the Ligurian region of northwestern Italy, specifically in the city of Genoa. It is believed to have derived from the medieval Italian word "queirolo," meaning "oak grove" or "woodland." This suggests that the earliest bearers of this surname may have lived near or been associated with an area surrounded by oak trees.
The name Queirolo can be traced back to the 13th century, with records indicating that it was present among noble families in Genoa during that period. One of the earliest known references to the name appears in a document dated 1260, which mentions a certain Guglielmo Queirolo, a merchant from the city.
In the 14th century, the Queirolo family gained prominence in Genoa, with several members holding important positions within the city's government and institutions. Notably, Oberto Queirolo served as a councillor in the Genoese Republic in the late 1300s.
The name Queirolo also has a strong connection to the island of Corsica, which was under Genoese rule for several centuries. Records from the 16th century indicate that a branch of the Queirolo family settled in Corsica, where they became landowners and played influential roles in the island's affairs.
One of the most notable figures bearing the Queirolo surname was Giovanni Battista Queirolo (1580-1654), a Genoese lawyer and historian who authored several works on the history of Genoa and its institutions.
In the 18th century, the Queirolo family continued to hold a prominent position in Genoa. Agostino Queirolo (1712-1795) was a respected architect and engineer, known for his contributions to the city's urban planning and infrastructure.
Another significant figure was Giacomo Queirolo (1780-1856), a Genoese nobleman and diplomat who served as the ambassador of the Kingdom of Sardinia to various European courts.
The name Queirolo has also been associated with several place names in the Ligurian region, such as the village of Queirolo near Genoa, which likely derived its name from the surname itself.
Throughout its history, the surname Queirolo has maintained a strong connection to its Ligurian roots and has been borne by individuals from various walks of life, including merchants, lawyers, architects, and diplomats.
Demographics
Ancestry and ethnicity for Queirolo
Among Census respondents with the surname Queirolo, the largest self-reported group is White at 50.2%. The next largest groups are Hispanic (46.2%) and Two or More Races (2.8%).
The bar chart below shows how Queirolo 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 Queirolo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White50.2% · 124
- Hispanic or Latino46.2% · 114
- Two or more races2.8% · 7
- American Indian and Alaska Native0.8% · 2
Timeline
Historical Census data for Queirolo
Queirolo 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
#73,005
National surname rank
Recorded bearers 266
+17 bearers (+6.8%)
Per 100,000 0.09
Rank movement Down 288 places
2020
#82,347
National surname rank
Recorded bearers 247
-19 bearers (-7.1%)
Per 100,000 0.08
Rank movement Down 9,342 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #72,717 | 249 | 0.09 | First available Census row | First available Census row |
| 2010 | #73,005 | 266 | 0.09 | +17 bearers (+6.8%) | Down 288 places |
| 2020 | #82,347 | 247 | 0.08 | -19 bearers (-7.1%) | Down 9,342 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 Queirolo 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 | #73,005 | #82,347 | -12.8% |
| Count | 266 | 247 | -7.1% |
| Per 100K | 0.09 | 0.08 | -8.2% |
Between the 2010 and 2020 Census, the number of Queirolo bearers went from 266 to 247 (-7.1% change). The surname moved down 9,342 positions in the national ranking, going from #73,005 to #82,347.
FAQ
Queirolo surname: questions and answers
How many people in the U.S. have the surname Queirolo?
Name Census estimates that about 283 living Americans carry the surname Queirolo. Using the current population baseline, that works out to roughly 1 in 1,211,146 residents.
How common is Queirolo?
Queirolo ranks #82,347 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.08 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 247 people with the surname Queirolo. That is different from the site's living-bearer estimate (283), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.08 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.08 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 Queirolo.
Has Queirolo become more or less common over time?
Between 2010 and 2020, the surname Queirolo went from 266 recorded bearers to 247. That is a decrease of 19 (-7.1%). In the national ranking it fell from #73,005 to #82,347.
What does the Census say about the background of Queirolo?
Among Census respondents with the surname Queirolo, the largest self-reported group is White at 50.2%. The next largest groups are Hispanic (46.2%) and Two or More Races (2.8%). 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?
White is the largest self-reported group for the surname Queirolo in the 2020 Census, accounting for 50.2% (124 people in the source table).
What is the full ancestry breakdown?
Queirolo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (50.2%), Hispanic (46.2%), Two or More Races (2.8%). 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 Queirolo (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 Queirolo mean?
A surname indicating origins from the town of Queirolo in northern Italy. 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 Queirolo (0.08 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 Queirolo?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.