2000
#7,055
National surname rank
Recorded bearers 4,371
First available Census row
Per 100,000 1.62
Rare Last name
Guillot
A French occupational surname referring to a knifemaker or bladesmith.
According to the 2020 US Census Bureau surname tables, roughly 4,777 Americans carry the last name Guillot. That puts it at #7,663 in the national surname ranking, appearing at a frequency of 1.39 per 100,000 people (about 1 in 71,751 residents).
This page is the full Name Census profile for the Guillot 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
4.8K
1 in 71,751
Census rank
#7,663
2020 decennial data
Per 100,000
1.4
Frequency rate
Recorded bearers
4.2K
rare in the US
Popularity narrative
The Census Bureau recorded 4,166 bearers of the surname Guillot in its 2020 decennial surname file. At a rate of 1.39 per 100,000 residents, it holds the 7663rd position in the national surname ranking.
Among Census respondents with the surname Guillot, the largest self-reported group is White at 85.2%. The next largest groups are Hispanic (7.3%) and Black (3.8%).
Origin
Meaning and origin of Guillot
The surname Guillot is of French origin, originating in the northern regions of France during the Middle Ages. It is a diminutive form derived from the Old French given name Guillaume, which itself is derived from the Germanic elements "wil" meaning "will" or "desire" and "helm" meaning "protection" or "helmet."
One of the earliest recorded instances of the name Guillot can be found in the Livre des Vassaux, a medieval census document from the 13th century, where it is listed as Willelmus Guillot. This indicates that the surname was already in use by this time, likely as a way to distinguish different branches of families with the common given name Guillaume.
The Guillot surname is also mentioned in various historical documents from the 14th and 15th centuries, such as tax records and property deeds, particularly in the regions of Normandy and Picardy. One notable example is Jean Guillot, a merchant from Rouen who is mentioned in a trade agreement with England in 1412.
During the Renaissance period, the Guillot family produced several notable individuals, including the poet and satirist Guillaume Guillot (c. 1490-1550), who was known for his biting commentary on the social and political issues of his time. Another prominent figure was Étienne Guillot (c. 1525-1592), a renowned architect and sculptor who worked on several notable buildings in Paris, including the Louvre.
In the 17th century, the Guillot surname gained further recognition with the birth of Claude Guillot (1620-1687), a French botanist and horticulturist who served as the superintendent of the Royal Gardens of France under King Louis XIV. His contributions to the field of horticulture and his extensive work on plant classification earned him a lasting reputation.
Another notable individual with the surname Guillot was Marie-Adrienne Guillot (1761-1837), a French painter and artist who gained recognition for her portraiture and genre scenes. Her works were exhibited at the prestigious Paris Salon and are now held in various museums and collections around the world.
Throughout its history, the Guillot surname has also been associated with various place names in France, such as Guillotière, a neighborhood in Lyon, and Guillot-Ville, a commune in the Aube department. These place names likely derived from individuals bearing the Guillot surname who were prominent landowners or residents in those areas.
Demographics
Ancestry and ethnicity for Guillot
Among Census respondents with the surname Guillot, the largest self-reported group is White at 85.2%. The next largest groups are Hispanic (7.3%) and Black (3.8%).
The bar chart below shows how Guillot 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 Guillot surname at the time of the 2020 Census, not any inherent property of the name itself.
- White85.2% · 3,550
- Hispanic or Latino7.3% · 306
- Black or African American3.8% · 160
- Two or more races2.4% · 102
- Asian and Pacific Islander0.8% · 34
- American Indian and Alaska Native0.3% · 14
Timeline
Historical Census data for Guillot
Guillot 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
#7,473
National surname rank
Recorded bearers 4,457
+86 bearers (+2.0%)
Per 100,000 1.51
Rank movement Down 418 places
2020
#7,663
National surname rank
Recorded bearers 4,166
-291 bearers (-6.5%)
Per 100,000 1.39
Rank movement Down 190 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #7,055 | 4,371 | 1.62 | First available Census row | First available Census row |
| 2010 | #7,473 | 4,457 | 1.51 | +86 bearers (+2.0%) | Down 418 places |
| 2020 | #7,663 | 4,166 | 1.39 | -291 bearers (-6.5%) | Down 190 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 Guillot 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 | #7,473 | #7,663 | -2.5% |
| Count | 4,457 | 4,166 | -6.5% |
| Per 100K | 1.51 | 1.39 | -7.7% |
Between the 2010 and 2020 Census, the number of Guillot bearers went from 4,457 to 4,166 (-6.5% change). The surname moved down 190 positions in the national ranking, going from #7,473 to #7,663.
FAQ
Guillot surname: questions and answers
How many people in the U.S. have the surname Guillot?
Name Census estimates that about 4,777 living Americans carry the surname Guillot. Using the current population baseline, that works out to roughly 1 in 71,751 residents.
How common is Guillot?
Guillot ranks #7,663 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.39 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 4,166 people with the surname Guillot. That is different from the site's living-bearer estimate (4,777), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.39 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.39 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 Guillot.
Has Guillot become more or less common over time?
Between 2010 and 2020, the surname Guillot went from 4,457 recorded bearers to 4,166. That is a decrease of 291 (-6.5%). In the national ranking it fell from #7,473 to #7,663.
What does the Census say about the background of Guillot?
Among Census respondents with the surname Guillot, the largest self-reported group is White at 85.2%. The next largest groups are Hispanic (7.3%) and Black (3.8%). 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 Guillot in the 2020 Census, accounting for 85.2% (3,550 people in the source table).
What is the full ancestry breakdown?
Guillot appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (85.2%), Hispanic (7.3%), Black (3.8%). 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 Guillot (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 Guillot mean?
A French occupational surname referring to a knifemaker or bladesmith. 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 Guillot (1.39 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 share the surname Guillot?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.