2010
#138,304
National surname rank
Recorded bearers 121
First available Census row
Per 100,000 0.04
Very Rare Last name
Guilbaud
A French surname derived from the Germanic name Willebald, composed of the elements "wil" meaning "will, desire" and "bald" meaning "bold, brave".
According to the 2020 US Census Bureau surname tables, roughly 157 Americans carry the last name Guilbaud. That puts it at #129,703 in the national surname ranking, appearing at a frequency of 0.05 per 100,000 people (about 1 in 2,183,149 residents).
This page is the full Name Census profile for the Guilbaud 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
157
1 in 2,183,149
Census rank
#129,703
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
137
very rare in the US
Popularity narrative
The Census Bureau recorded 137 bearers of the surname Guilbaud in its 2020 decennial surname file. At a rate of 0.05 per 100,000 residents, it holds the 129703rd position in the national surname ranking.
Among Census respondents with the surname Guilbaud, the largest self-reported group is Black at 56.2%. The next largest groups are White (18.2%) and Hispanic (18.2%).
Origin
Meaning and origin of Guilbaud
The surname Guilbaud originated in France during the medieval period. It is derived from the Old French personal name Guilbaud, which is a compound of the Germanic elements "wil" meaning "will" or "desire" and "bald" meaning "bold" or "brave". The name likely referred to someone with a strong or courageous personality.
The earliest recorded instances of the surname Guilbaud can be found in various regions of France, including Normandy, Brittany, and Poitou. It is believed that the name first appeared in written records during the 11th or 12th century, although specific references are scarce due to the lack of comprehensive record-keeping at that time.
One notable early bearer of the name was Guilbaud de Maulévrier, a French nobleman who lived in the 12th century and served as a crusader during the Third Crusade (1189-1192). Another historical figure with the surname Guilbaud was Étienne Guilbaud, a French physician and writer who lived in the 16th century (c. 1530-1600).
In the 17th century, the name Guilbaud was found in various local records and documents, such as parish registers and land deeds. For example, Jean Guilbaud was a landowner in the village of Vaux-sur-Mer, near La Rochelle, in the early 1600s.
During the 18th century, the surname Guilbaud gained prominence in the region of Poitou, where several families bearing the name were involved in the local wine trade and agriculture. One notable individual from this period was Pierre Guilbaud (1720-1789), a wealthy merchant and landowner from the town of Vouillé.
In the 19th century, the Guilbaud family continued to have a presence in various parts of France, with some members migrating to other parts of Europe and even to North America. One prominent figure was Auguste Guilbaud (1828-1901), a French politician and lawyer who served as a member of the National Assembly during the Third Republic.
Throughout its history, the surname Guilbaud has been spelled in various ways, including Guillebaud, Guilbault, and Guilbeau, reflecting regional dialects and variations in spelling conventions over time.
Demographics
Ancestry and ethnicity for Guilbaud
Among Census respondents with the surname Guilbaud, the largest self-reported group is Black at 56.2%. The next largest groups are White (18.2%) and Hispanic (18.2%).
The bar chart below shows how Guilbaud 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 Guilbaud surname at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American56.2% · 77
- White18.2% · 25
- Hispanic or Latino18.2% · 25
- Two or more races5.8% · 8
- Asian and Pacific Islander1.5% · 2
Timeline
Historical Census data for Guilbaud
Guilbaud appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#129,703
National surname rank
Recorded bearers 137
+16 bearers (+13.2%)
Per 100,000 0.05
Rank movement Up 8,601 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #138,304 | 121 | 0.04 | First available Census row | First available Census row |
| 2020 | #129,703 | 137 | 0.05 | +16 bearers (+13.2%) | Up 8,601 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 Guilbaud 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 | #138,304 | #129,703 | 6.2% |
| Count | 121 | 137 | 13.2% |
| Per 100K | 0.04 | 0.05 | 14.6% |
Between the 2010 and 2020 Census, the number of Guilbaud bearers went from 121 to 137 (+13.2% change). The surname moved up 8,601 positions in the national ranking, going from #138,304 to #129,703.
FAQ
Guilbaud surname: questions and answers
How many people in the U.S. have the surname Guilbaud?
Name Census estimates that about 157 living Americans carry the surname Guilbaud. Using the current population baseline, that works out to roughly 1 in 2,183,149 residents.
How common is Guilbaud?
Guilbaud ranks #129,703 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.05 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 137 people with the surname Guilbaud. That is different from the site's living-bearer estimate (157), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.05 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.05 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 Guilbaud.
Has Guilbaud become more or less common over time?
Between 2010 and 2020, the surname Guilbaud went from 121 recorded bearers to 137. That is an increase of 16 (+13.2%). In the national ranking it rose from #138,304 to #129,703.
What does the Census say about the background of Guilbaud?
Among Census respondents with the surname Guilbaud, the largest self-reported group is Black at 56.2%. The next largest groups are White (18.2%) and Hispanic (18.2%). 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?
Black is the largest self-reported group for the surname Guilbaud in the 2020 Census, accounting for 56.2% (77 people in the source table).
What is the full ancestry breakdown?
Guilbaud appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Black (56.2%), White (18.2%), Hispanic (18.2%). 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 Guilbaud (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 Guilbaud mean?
A French surname derived from the Germanic name Willebald, composed of the elements "wil" meaning "will, desire" and "bald" meaning "bold, brave". 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 Guilbaud (0.05 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 Guilbaud?
Want to know how many people have the last name Guilbaud? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.