2000
#115,489
National surname rank
Recorded bearers 140
First available Census row
Per 100,000 0.05
Very Rare Last name
Caasi
A surname derived from the Italian word "casa" meaning "house" or "home".
According to the 2020 US Census Bureau surname tables, roughly 294 Americans carry the last name Caasi. That puts it at #80,054 in the national surname ranking, appearing at a frequency of 0.09 per 100,000 people (about 1 in 1,165,831 residents).
This page is the full Name Census profile for the Caasi 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
294
1 in 1,165,831
Census rank
#80,054
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
256
very rare in the US
Popularity narrative
The Census Bureau recorded 256 bearers of the surname Caasi in its 2020 decennial surname file. At a rate of 0.09 per 100,000 residents, it holds the 80054th position in the national surname ranking.
Among Census respondents with the surname Caasi, the largest self-reported group is Asian/Pacific Islander at 84.0%. The next largest groups are Two or More Races (7.8%) and White (3.9%).
Origin
Meaning and origin of Caasi
The surname "Caasi" is believed to have originated in Italy, with records dating back to the 13th century. It is thought to be derived from the Latin word "casalis," which means a small village or hamlet. This suggests that the name may have originated as a locative surname, indicating a person's place of origin or residence.
Early records show variations in the spelling of the name, such as "Casali," "Casale," and "Casali." These variations were common due to the lack of standardized spelling rules at the time. One of the earliest known references to the name can be found in a document from the city of Siena in 1289, where a "Guido Casali" is mentioned.
In the 14th century, the name appears in several historical records from the region of Tuscany. A prominent figure bearing this surname was Francesco Caasi (1325-1392), a renowned scholar and philosopher who taught at the University of Florence. His works on logic and philosophy were highly influential during the Renaissance period.
During the 15th century, the Caasi family became well-established in the city of Lucca, where they were involved in the silk trade. One notable member was Bartolomeo Caasi (1452-1518), a successful merchant and banker whose wealth and influence allowed him to commission several architectural projects in the city.
In the 16th century, the name spread to other parts of Italy, including the region of Emilia-Romagna. Here, the Caasi family was involved in agriculture and viticulture. A prominent figure from this period was Girolamo Caasi (1520-1592), a renowned winemaker whose vintages were highly sought after by the nobility.
Another notable individual with the surname Caasi was Cesare Caasi (1618-1678), a military commander who served in the Venetian army during the Cretan War against the Ottoman Empire. His bravery and leadership earned him numerous honors and accolades.
While the surname Caasi is not as common today as it was in past centuries, it remains an integral part of Italian heritage and history, with its roots firmly planted in the rich cultural tapestry of the Italian peninsula.
Demographics
Ancestry and ethnicity for Caasi
Among Census respondents with the surname Caasi, the largest self-reported group is Asian/Pacific Islander at 84.0%. The next largest groups are Two or More Races (7.8%) and White (3.9%).
The bar chart below shows how Caasi 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 Caasi surname at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander84.0% · 215
- Two or more races7.8% · 20
- White3.9% · 10
- Hispanic or Latino3.9% · 10
- American Indian and Alaska Native0.4% · 1
Timeline
Historical Census data for Caasi
Caasi 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
#83,226
National surname rank
Recorded bearers 226
+86 bearers (+61.4%)
Per 100,000 0.08
Rank movement Up 32,263 places
2020
#80,054
National surname rank
Recorded bearers 256
+30 bearers (+13.3%)
Per 100,000 0.09
Rank movement Up 3,172 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #115,489 | 140 | 0.05 | First available Census row | First available Census row |
| 2010 | #83,226 | 226 | 0.08 | +86 bearers (+61.4%) | Up 32,263 places |
| 2020 | #80,054 | 256 | 0.09 | +30 bearers (+13.3%) | Up 3,172 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 Caasi 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 | #83,226 | #80,054 | 3.8% |
| Count | 226 | 256 | 13.3% |
| Per 100K | 0.08 | 0.09 | 7.1% |
Between the 2010 and 2020 Census, the number of Caasi bearers went from 226 to 256 (+13.3% change). The surname moved up 3,172 positions in the national ranking, going from #83,226 to #80,054.
FAQ
Caasi surname: questions and answers
How many people in the U.S. have the surname Caasi?
Name Census estimates that about 294 living Americans carry the surname Caasi. Using the current population baseline, that works out to roughly 1 in 1,165,831 residents.
How common is Caasi?
Caasi ranks #80,054 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.09 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 256 people with the surname Caasi. That is different from the site's living-bearer estimate (294), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.09 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.09 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 Caasi.
Has Caasi become more or less common over time?
Between 2010 and 2020, the surname Caasi went from 226 recorded bearers to 256. That is an increase of 30 (+13.3%). In the national ranking it rose from #83,226 to #80,054.
What does the Census say about the background of Caasi?
Among Census respondents with the surname Caasi, the largest self-reported group is Asian/Pacific Islander at 84.0%. The next largest groups are Two or More Races (7.8%) and White (3.9%). 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?
Asian/Pacific Islander is the largest self-reported group for the surname Caasi in the 2020 Census, accounting for 84.0% (215 people in the source table).
What is the full ancestry breakdown?
Caasi appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Asian/Pacific Islander (84.0%), Two or More Races (7.8%), White (3.9%). 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 Caasi (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 Caasi mean?
A surname derived from the Italian word "casa" meaning "house" or "home". 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 Caasi (0.09 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 Caasi?
Find out how many people have the surname Caasi on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.