2000
#134,037
National surname rank
Recorded bearers 116
First available Census row
Per 100,000 0.04
Very Rare Last name
Jaquillard
A French surname meaning "one who stands guard" or "watchman".
According to the 2020 US Census Bureau surname tables, roughly 120 Americans carry the last name Jaquillard. That puts it at #152,989 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,856,286 residents).
This page is the full Name Census profile for the Jaquillard 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
120
1 in 2,856,286
Census rank
#152,989
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
105
very rare in the US
Popularity narrative
The Census Bureau recorded 105 bearers of the surname Jaquillard in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152989th position in the national surname ranking.
Among Census respondents with the surname Jaquillard, the largest self-reported group is White at 94.3%. The next largest groups are Hispanic (3.8%) and Black (1.9%).
Origin
Meaning and origin of Jaquillard
The surname Jaquillard has its origins in France, first appearing in records during the late 12th century. It is believed to have derived from the Old French words "jacque" meaning a small jacket and "lard" meaning bacon fat, possibly referring to an occupation or profession.
The earliest known bearer of the name was Jean Jaquillard, a merchant from the region of Normandy, who was recorded in a charter from 1187. Another early record is of Guillaume Jaquillard, a landowner in the village of Pourcieux in Provence, mentioned in a feudal contract dated 1235.
In the 14th century, the name Jaquillard appeared in the tax rolls of the city of Bordeaux, with Jacques Jaquillard listed as a wine merchant in 1367. During this period, variations in spelling were common, with forms such as Jacquillart, Jacquelard, and Jacquillart appearing in different regions.
One notable figure was Jehan Jaquillard, a soldier who fought alongside Joan of Arc during the Siege of Orléans in 1429. Jaquillard was credited with saving Joan's life during a skirmish and was later granted a coat of arms by Charles VII of France.
In the 16th century, the name Jaquillard spread to other parts of Europe, with records showing a Andreas Jaquillard (1522-1591) who was a Protestant clergyman in Basel, Switzerland. Another prominent individual was Pierre Jaquillard (1576-1642), a French mathematician and astronomer who made contributions to the development of logarithms.
Other notable bearers of the name include Marie-Anne Jaquillard (1700-1775), a French writer and poet; Louis Jaquillard (1814-1890), a French military officer and explorer of North Africa; and Émile Jaquillard (1858-1927), a Swiss architect and designer of the Basilique de Fourvière in Lyon, France.
Demographics
Ancestry and ethnicity for Jaquillard
Among Census respondents with the surname Jaquillard, the largest self-reported group is White at 94.3%. The next largest groups are Hispanic (3.8%) and Black (1.9%).
The bar chart below shows how Jaquillard 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 Jaquillard surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.3% · 99
- Hispanic or Latino3.8% · 4
- Black or African American1.9% · 2
Timeline
Historical Census data for Jaquillard
Jaquillard 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
#136,449
National surname rank
Recorded bearers 123
+7 bearers (+6.0%)
Per 100,000 0.04
Rank movement Down 2,412 places
2020
#152,989
National surname rank
Recorded bearers 105
-18 bearers (-14.6%)
Per 100,000 0.04
Rank movement Down 16,540 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #134,037 | 116 | 0.04 | First available Census row | First available Census row |
| 2010 | #136,449 | 123 | 0.04 | +7 bearers (+6.0%) | Down 2,412 places |
| 2020 | #152,989 | 105 | 0.04 | -18 bearers (-14.6%) | Down 16,540 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 Jaquillard 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 | #136,449 | #152,989 | -12.1% |
| Count | 123 | 105 | -14.6% |
| Per 100K | 0.04 | 0.04 | -12.2% |
Between the 2010 and 2020 Census, the number of Jaquillard bearers went from 123 to 105 (-14.6% change). The surname moved down 16,540 positions in the national ranking, going from #136,449 to #152,989.
FAQ
Jaquillard surname: questions and answers
How many people in the U.S. have the surname Jaquillard?
Name Census estimates that about 120 living Americans carry the surname Jaquillard. Using the current population baseline, that works out to roughly 1 in 2,856,286 residents.
How common is Jaquillard?
Jaquillard ranks #152,989 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 105 people with the surname Jaquillard. That is different from the site's living-bearer estimate (120), 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 Jaquillard.
Has Jaquillard become more or less common over time?
Between 2010 and 2020, the surname Jaquillard went from 123 recorded bearers to 105. That is a decrease of 18 (-14.6%). In the national ranking it fell from #136,449 to #152,989.
What does the Census say about the background of Jaquillard?
Among Census respondents with the surname Jaquillard, the largest self-reported group is White at 94.3%. The next largest groups are Hispanic (3.8%) and Black (1.9%). 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?
White is the largest self-reported group for the surname Jaquillard in the 2020 Census, accounting for 94.3% (99 people in the source table).
What is the full ancestry breakdown?
Jaquillard appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.3%), Hispanic (3.8%), Black (1.9%). 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 Jaquillard (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 Jaquillard mean?
A French surname meaning "one who stands guard" or "watchman". 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 Jaquillard (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 common is the surname Jaquillard?
Want to know how many people have the last name Jaquillard? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.