2000
#127,186
National surname rank
Recorded bearers 124
First available Census row
Per 100,000 0.05
Very Rare Last name
Cassat
A French surname possibly derived from a place name or an occupation related to housing or construction.
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Cassat. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Cassat 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Cassat in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Cassat, the largest self-reported group is White at 93.0%. The next largest groups are Hispanic (4.3%) and Two or More Races (2.6%).
Origin
Meaning and origin of Cassat
The surname Cassat originated in France during the medieval period. It is believed to be derived from the French word "cassé," which means "broken." This could suggest that the name was given to someone who lived near a broken or damaged structure, such as a castle or a bridge.
The earliest recorded instance of the name Cassat can be traced back to the 13th century in the region of Burgundy, France. It is mentioned in a document from 1265 that refers to a person named Jean Cassat, who was a landowner in the village of Champlitte.
In the 14th century, the name appears in several historical records, including the Cartulaire de l'Abbaye de Cîteaux, which is a collection of charters and documents related to the Cistercian Abbey of Cîteaux in Burgundy. One of the entries mentions a monk named Frère Cassat, who lived in the abbey during the year 1347.
During the 16th century, the name Cassat was found in the town of Dijon, which was the capital of the Duchy of Burgundy. A notable person with this surname was Jacques Cassat, who was born in Dijon in 1548 and became a renowned scholar and author of several works on philosophy and theology.
In the 17th century, the name Cassat spread to other regions of France, including the Provence area in the south. One notable figure from this period was André Cassat, who was born in Aix-en-Provence in 1628. He was a respected lawyer and served as a magistrate in the Parlement of Aix.
Another prominent individual with the surname Cassat was Marie Cassat, who lived in the 18th century. She was born in 1734 in the village of Vauvenargues, near Aix-en-Provence. Marie Cassat gained recognition as a talented painter and her works were exhibited in several art salons in Paris during her lifetime.
It is worth mentioning that the surname Cassat is sometimes spelled differently, such as Cassat, Cassart, or Cassart. These variations likely emerged due to regional dialects or transcription errors in historical records.
Demographics
Ancestry and ethnicity for Cassat
Among Census respondents with the surname Cassat, the largest self-reported group is White at 93.0%. The next largest groups are Hispanic (4.3%) and Two or More Races (2.6%).
The bar chart below shows how Cassat 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 Cassat surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.0% · 107
- Hispanic or Latino4.3% · 5
- Two or more races2.6% · 3
Timeline
Historical Census data for Cassat
Cassat 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
#149,395
National surname rank
Recorded bearers 110
-14 bearers (-11.3%)
Per 100,000 0.04
Rank movement Down 22,209 places
2020
#145,757
National surname rank
Recorded bearers 115
+5 bearers (+4.5%)
Per 100,000 0.04
Rank movement Up 3,638 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #127,186 | 124 | 0.05 | First available Census row | First available Census row |
| 2010 | #149,395 | 110 | 0.04 | -14 bearers (-11.3%) | Down 22,209 places |
| 2020 | #145,757 | 115 | 0.04 | +5 bearers (+4.5%) | Up 3,638 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 Cassat 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 | #149,395 | #145,757 | 2.4% |
| Count | 110 | 115 | 4.5% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Cassat bearers went from 110 to 115 (+4.5% change). The surname moved up 3,638 positions in the national ranking, going from #149,395 to #145,757.
FAQ
Cassat surname: questions and answers
How many people in the U.S. have the surname Cassat?
Name Census estimates that about 132 living Americans carry the surname Cassat. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Cassat?
Cassat ranks #145,757 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 115 people with the surname Cassat. That is different from the site's living-bearer estimate (132), 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 Cassat.
Has Cassat become more or less common over time?
Between 2010 and 2020, the surname Cassat went from 110 recorded bearers to 115. That is an increase of 5 (+4.5%). In the national ranking it rose from #149,395 to #145,757.
What does the Census say about the background of Cassat?
Among Census respondents with the surname Cassat, the largest self-reported group is White at 93.0%. The next largest groups are Hispanic (4.3%) and Two or More Races (2.6%). 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 Cassat in the 2020 Census, accounting for 93.0% (107 people in the source table).
What is the full ancestry breakdown?
Cassat appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.0%), Hispanic (4.3%), Two or More Races (2.6%). 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 Cassat (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 Cassat mean?
A French surname possibly derived from a place name or an occupation related to housing or construction. 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 Cassat (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 are called Cassat?
You can see how common the surname Cassat is on our sister site HowManyOfMe.org — same data roots, lighter UI.