2000
#134,037
National surname rank
Recorded bearers 116
First available Census row
Per 100,000 0.04
Very Rare Last name
Mustac
A surname likely derived from the French word "moustache", referring to someone with a distinctive mustache.
According to the 2020 US Census Bureau surname tables, roughly 136 Americans carry the last name Mustac. That puts it at #142,788 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,520,252 residents).
This page is the full Name Census profile for the Mustac 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
136
1 in 2,520,252
Census rank
#142,788
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
119
very rare in the US
Popularity narrative
The Census Bureau recorded 119 bearers of the surname Mustac in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 142788th position in the national surname ranking.
Among Census respondents with the surname Mustac, the largest self-reported group is White at 93.3%. The next largest groups are Hispanic (5.0%) and American Indian/Alaska Native (0.8%).
Origin
Meaning and origin of Mustac
The surname Mustac is believed to have originated in France during the Middle Ages. It is thought to be derived from the Old French word "moustache," which referred to a mustache or a type of facial hair. This suggests that the name may have been initially given as a descriptive nickname to someone who had a distinctive mustache or facial hair.
The earliest recorded instances of the Mustac surname can be traced back to the 13th century in various regions of France, particularly in the northern and central parts of the country. Some of the earliest known bearers of this name include Jean Mustac, who was mentioned in a document from the town of Reims in 1274, and Pierre Mustac, a resident of Paris recorded in a tax register from 1298.
During the late Middle Ages and Renaissance period, the Mustac name appeared in various historical records and documents across France. For example, a man named Étienne Mustac was listed as a landowner in the village of Châteaudun in 1412, while a certain Jacques Mustac was recorded as a merchant in the city of Lyon in 1489.
As the centuries passed, the Mustac surname spread to other parts of Europe, likely due to migration and trade. In the 16th century, a notable figure bearing this name was Juan Mustac, a Spanish explorer and navigator who accompanied Ferdinand Magellan on his famous voyage around the world in 1519-1522.
Another prominent individual with the Mustac surname was Maximilien Mustac, a French military officer who fought in the Napoleonic Wars in the early 19th century. He was born in 1785 and distinguished himself in several campaigns, rising to the rank of general before his death in 1831.
In the 19th century, a man named François Mustac (1820-1892) gained recognition as a renowned French painter and artist, known for his landscapes and portraits. His works were exhibited at the prestigious Salon in Paris and can be found in various art museums and collections across Europe.
While the origins of the Mustac surname can be traced back to France, it has since been adopted and used in other countries and cultures over the centuries, likely due to migration and intermarriage. However, its roots remain firmly grounded in the Old French language and the historical significance of facial hair during the Middle Ages.
Demographics
Ancestry and ethnicity for Mustac
Among Census respondents with the surname Mustac, the largest self-reported group is White at 93.3%. The next largest groups are Hispanic (5.0%) and American Indian/Alaska Native (0.8%).
The bar chart below shows how Mustac 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 Mustac surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.3% · 111
- Hispanic or Latino5.0% · 6
- American Indian and Alaska Native0.8% · 1
- Two or more races0.8% · 1
Timeline
Historical Census data for Mustac
Mustac 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
#142,108
National surname rank
Recorded bearers 117
+1 bearers (+0.9%)
Per 100,000 0.04
Rank movement Down 8,071 places
2020
#142,788
National surname rank
Recorded bearers 119
+2 bearers (+1.7%)
Per 100,000 0.04
Rank movement Down 680 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 | #142,108 | 117 | 0.04 | +1 bearers (+0.9%) | Down 8,071 places |
| 2020 | #142,788 | 119 | 0.04 | +2 bearers (+1.7%) | Down 680 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 Mustac 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 | #142,108 | #142,788 | -0.5% |
| Count | 117 | 119 | 1.7% |
| Per 100K | 0.04 | 0.04 | -0.5% |
Between the 2010 and 2020 Census, the number of Mustac bearers went from 117 to 119 (+1.7% change). The surname moved down 680 positions in the national ranking, going from #142,108 to #142,788.
FAQ
Mustac surname: questions and answers
How many people in the U.S. have the surname Mustac?
Name Census estimates that about 136 living Americans carry the surname Mustac. Using the current population baseline, that works out to roughly 1 in 2,520,252 residents.
How common is Mustac?
Mustac ranks #142,788 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 119 people with the surname Mustac. That is different from the site's living-bearer estimate (136), 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 Mustac.
Has Mustac become more or less common over time?
Between 2010 and 2020, the surname Mustac went from 117 recorded bearers to 119. That is an increase of 2 (+1.7%). In the national ranking it fell from #142,108 to #142,788.
What does the Census say about the background of Mustac?
Among Census respondents with the surname Mustac, the largest self-reported group is White at 93.3%. The next largest groups are Hispanic (5.0%) and American Indian/Alaska Native (0.8%). 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 Mustac in the 2020 Census, accounting for 93.3% (111 people in the source table).
What is the full ancestry breakdown?
Mustac appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.3%), Hispanic (5.0%), American Indian/Alaska Native (0.8%). 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 Mustac (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 Mustac mean?
A surname likely derived from the French word "moustache", referring to someone with a distinctive mustache. 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 Mustac (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 have the last name Mustac?
For a quick modern take, check how many people have the last name Mustac on our sister site HowManyOfMe.org.