2000
#130,443
National surname rank
Recorded bearers 120
First available Census row
Per 100,000 0.04
Very Rare Last name
Casarotto
An Italian locational surname derived from a place name referring to a small house or cottage.
According to the 2020 US Census Bureau surname tables, roughly 127 Americans carry the last name Casarotto. That puts it at #148,665 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,698,853 residents).
This page is the full Name Census profile for the Casarotto 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
127
1 in 2,698,853
Census rank
#148,665
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
111
very rare in the US
Popularity narrative
The Census Bureau recorded 111 bearers of the surname Casarotto in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 148665th position in the national surname ranking.
Among Census respondents with the surname Casarotto, the largest self-reported group is White at 86.5%. The next largest groups are Hispanic (7.2%) and Two or More Races (5.4%).
Origin
Meaning and origin of Casarotto
The surname Casarotto has its origins in Italy, specifically in the northern regions of Veneto and Friuli-Venezia Giulia. It is believed to have emerged during the Middle Ages, around the 12th or 13th century. The name is derived from the Italian word "casa," meaning house, and the diminutive suffix "-otto," which denotes smallness or affection. Therefore, the name Casarotto likely referred to someone who lived in a small house or a cottage.
One of the earliest recorded instances of the name Casarotto can be found in a document from the city of Treviso, dated 1297, where a certain Giacomo Casarotto is mentioned. This suggests that the name was already established in the area by the late 13th century.
In the 14th century, the name appears in several municipal records and cadastral registers in the region of Veneto, particularly in the cities of Padua, Verona, and Venice. One notable bearer of the name was Giovanni Casarotto, a merchant from Venice who was involved in trade with the Byzantine Empire in the late 1300s.
During the Renaissance period, the Casarotto family was well-established in the city of Treviso. In the 16th century, a prominent member of the family, Ludovico Casarotto, was a respected jurist and served as a magistrate in the city.
In the 17th century, the name Casarotto is found in various records from the Friuli region, particularly in the towns of Udine and Pordenone. One notable figure from this time was Francesco Casarotto, a painter and fresco artist who decorated several churches in the area.
Moving into the 18th century, the name Casarotto appears in records from the city of Venice, where a family of musicians and composers bearing the name gained prominence. The most renowned among them was Antonio Casarotto, a violinist and composer who was active in the late 1700s.
In the 19th century, the Casarotto family produced several scholars and intellectuals. One notable figure was Giuseppe Casarotto, a linguist and philologist born in Treviso in 1826, who made significant contributions to the study of the Venetian language and dialects.
Throughout history, the surname Casarotto has been associated with various occupations, including merchants, artisans, lawyers, artists, and academics, reflecting the diverse backgrounds and pursuits of those who bore this name.
Demographics
Ancestry and ethnicity for Casarotto
Among Census respondents with the surname Casarotto, the largest self-reported group is White at 86.5%. The next largest groups are Hispanic (7.2%) and Two or More Races (5.4%).
The bar chart below shows how Casarotto 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 Casarotto surname at the time of the 2020 Census, not any inherent property of the name itself.
- White86.5% · 96
- Hispanic or Latino7.2% · 8
- Two or more races5.4% · 6
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Casarotto
Casarotto 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
#158,432
National surname rank
Recorded bearers 102
-18 bearers (-15.0%)
Per 100,000 0.03
Rank movement Down 27,989 places
2020
#148,665
National surname rank
Recorded bearers 111
+9 bearers (+8.8%)
Per 100,000 0.04
Rank movement Up 9,767 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #130,443 | 120 | 0.04 | First available Census row | First available Census row |
| 2010 | #158,432 | 102 | 0.03 | -18 bearers (-15.0%) | Down 27,989 places |
| 2020 | #148,665 | 111 | 0.04 | +9 bearers (+8.8%) | Up 9,767 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 Casarotto 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 | #158,432 | #148,665 | 6.2% |
| Count | 102 | 111 | 8.8% |
| Per 100K | 0.03 | 0.04 | 23.8% |
Between the 2010 and 2020 Census, the number of Casarotto bearers went from 102 to 111 (+8.8% change). The surname moved up 9,767 positions in the national ranking, going from #158,432 to #148,665.
FAQ
Casarotto surname: questions and answers
How many people in the U.S. have the surname Casarotto?
Name Census estimates that about 127 living Americans carry the surname Casarotto. Using the current population baseline, that works out to roughly 1 in 2,698,853 residents.
How common is Casarotto?
Casarotto ranks #148,665 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 111 people with the surname Casarotto. That is different from the site's living-bearer estimate (127), 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 Casarotto.
Has Casarotto become more or less common over time?
Between 2010 and 2020, the surname Casarotto went from 102 recorded bearers to 111. That is an increase of 9 (+8.8%). In the national ranking it rose from #158,432 to #148,665.
What does the Census say about the background of Casarotto?
Among Census respondents with the surname Casarotto, the largest self-reported group is White at 86.5%. The next largest groups are Hispanic (7.2%) and Two or More Races (5.4%). 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 Casarotto in the 2020 Census, accounting for 86.5% (96 people in the source table).
What is the full ancestry breakdown?
Casarotto appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (86.5%), Hispanic (7.2%), Two or More Races (5.4%). 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 Casarotto (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 Casarotto mean?
An Italian locational surname derived from a place name referring to a small house or cottage. 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 Casarotto (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 Casarotto?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.