2000
#9,557
National surname rank
Recorded bearers 3,121
First available Census row
Per 100,000 1.16
Rare Last name
Lacasse
French occupational surname referring to a hunter or gamekeeper, derived from the Old French word "chace" meaning "hunt."
According to the 2020 US Census Bureau surname tables, roughly 3,648 Americans carry the last name Lacasse. That puts it at #9,738 in the national surname ranking, appearing at a frequency of 1.06 per 100,000 people (about 1 in 93,957 residents).
This page is the full Name Census profile for the Lacasse 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
3.6K
1 in 93,957
Census rank
#9,738
2020 decennial data
Per 100,000
1.1
Frequency rate
Recorded bearers
3.2K
rare in the US
Popularity narrative
The Census Bureau recorded 3,181 bearers of the surname Lacasse in its 2020 decennial surname file. At a rate of 1.06 per 100,000 residents, it holds the 9738th position in the national surname ranking.
Among Census respondents with the surname Lacasse, the largest self-reported group is White at 91.8%. The next largest groups are Hispanic (3.7%) and Two or More Races (3.0%).
Origin
Meaning and origin of Lacasse
The surname Lacasse originated in France and dates back to the early medieval period. It is derived from the Old French word "casse," which means "chest" or "box." The name likely referred to someone who made or sold chests or boxes, a trade that was prevalent during that time.
One of the earliest recorded instances of the Lacasse surname can be found in the Domesday Book, a manuscript commissioned by William the Conqueror in 1086. This document contains a reference to a person named "Radulfus le Cassier" in Normandy, which translates to "Ralph the Chest-Maker."
During the 12th and 13th centuries, the name appeared in various records and documents across different regions of France, with spellings such as "Le Casser," "Le Casseor," and "Lacasseur." These variations likely stemmed from regional dialects and the evolution of the French language over time.
One notable figure in history bearing the Lacasse surname was Jean Lacasse (1558-1628), a French merchant and trader who established successful trading routes between France and the Americas. His business ventures contributed significantly to the economic growth of the French colonies in the New World.
Another prominent individual was Marie-Anne Lacasse (1678-1742), a renowned French poet and playwright. Her works, which explored themes of love, nature, and societal issues, were widely acclaimed during her lifetime and continue to be studied and appreciated by scholars today.
In the 18th century, Pierre Lacasse (1712-1789) gained recognition as a skilled architect and engineer. He was responsible for designing and overseeing the construction of several notable buildings and structures in Paris, including the Palais de la Monnaie (Mint Palace) and the Pont Marie bridge over the Seine River.
The 19th century saw the rise of Louis Lacasse (1824-1897), a French military officer and tactician who played a significant role in the Franco-Prussian War. His strategic maneuvers and leadership during key battles earned him widespread respect and admiration from both allies and adversaries.
Another notable figure was Émilie Lacasse (1866-1938), a pioneering French educator and advocate for women's rights. She founded several schools for girls and worked tirelessly to promote equal educational opportunities for women, paving the way for future generations of female scholars and professionals.
Demographics
Ancestry and ethnicity for Lacasse
Among Census respondents with the surname Lacasse, the largest self-reported group is White at 91.8%. The next largest groups are Hispanic (3.7%) and Two or More Races (3.0%).
The bar chart below shows how Lacasse 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 Lacasse surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.8% · 2,921
- Hispanic or Latino3.7% · 119
- Two or more races3.0% · 95
- Asian and Pacific Islander0.7% · 22
- Black or African American0.4% · 14
- American Indian and Alaska Native0.3% · 10
Timeline
Historical Census data for Lacasse
Lacasse 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
#9,790
National surname rank
Recorded bearers 3,307
+186 bearers (+6.0%)
Per 100,000 1.12
Rank movement Down 233 places
2020
#9,738
National surname rank
Recorded bearers 3,181
-126 bearers (-3.8%)
Per 100,000 1.06
Rank movement Up 52 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #9,557 | 3,121 | 1.16 | First available Census row | First available Census row |
| 2010 | #9,790 | 3,307 | 1.12 | +186 bearers (+6.0%) | Down 233 places |
| 2020 | #9,738 | 3,181 | 1.06 | -126 bearers (-3.8%) | Up 52 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 Lacasse 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 | #9,790 | #9,738 | 0.5% |
| Count | 3,307 | 3,181 | -3.8% |
| Per 100K | 1.12 | 1.06 | -5.0% |
Between the 2010 and 2020 Census, the number of Lacasse bearers went from 3,307 to 3,181 (-3.8% change). The surname moved up 52 positions in the national ranking, going from #9,790 to #9,738.
FAQ
Lacasse surname: questions and answers
How many people in the U.S. have the surname Lacasse?
Name Census estimates that about 3,648 living Americans carry the surname Lacasse. Using the current population baseline, that works out to roughly 1 in 93,957 residents.
How common is Lacasse?
Lacasse ranks #9,738 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.06 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 3,181 people with the surname Lacasse. That is different from the site's living-bearer estimate (3,648), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.06 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.06 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Lacasse.
Has Lacasse become more or less common over time?
Between 2010 and 2020, the surname Lacasse went from 3,307 recorded bearers to 3,181. That is a decrease of 126 (-3.8%). In the national ranking it rose from #9,790 to #9,738.
What does the Census say about the background of Lacasse?
Among Census respondents with the surname Lacasse, the largest self-reported group is White at 91.8%. The next largest groups are Hispanic (3.7%) and Two or More Races (3.0%). 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 Lacasse in the 2020 Census, accounting for 91.8% (2,921 people in the source table).
What is the full ancestry breakdown?
Lacasse appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.8%), Hispanic (3.7%), Two or More Races (3.0%). 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 Lacasse (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 Lacasse mean?
French occupational surname referring to a hunter or gamekeeper, derived from the Old French word "chace" meaning "hunt." 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 Lacasse (1.06 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 Lacasse?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.