2000
#136,783
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Mulzac
A French surname derived from the Old French word "mousac," meaning "mulberry."
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Mulzac. That puts it at #150,205 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,742,035 residents).
This page is the full Name Census profile for the Mulzac 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
125
1 in 2,742,035
Census rank
#150,205
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
109
very rare in the US
Popularity narrative
The Census Bureau recorded 109 bearers of the surname Mulzac in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150205th position in the national surname ranking.
Among Census respondents with the surname Mulzac, the largest self-reported group is Black at 83.5%. The next largest groups are White (8.3%) and Two or More Races (4.6%).
Origin
Meaning and origin of Mulzac
The surname "MULZAC" has its origins in France, specifically in the regions of Brittany and Normandy. It is believed to have emerged in the late medieval period, likely around the 13th or 14th century. The name is thought to be derived from the Old French words "mol" or "molle," meaning "soft" or "gentle," and "sac," meaning "bag" or "sack." This combination may have been used to describe someone who produced or carried soft bags or sacks.
One of the earliest recorded instances of the name "MULZAC" can be found in the historical records of the town of Rennes in Brittany, dating back to the late 15th century. The name was also present in various manuscripts and official documents from the region during this time period. In the 16th century, the name appears in the records of the town of Caen in Normandy, suggesting that the family had spread to different parts of northern France.
A notable individual bearing the surname "MULZAC" was Jean Mulzac, a French merchant who lived in the city of Bordeaux during the late 16th century. He is mentioned in several trade records and business transactions from that era. Another early bearer of the name was Pierre Mulzac, a farmer from the village of Plédran in Brittany, who was born around 1620 and is documented in local parish records.
In the 18th century, a branch of the Mulzac family settled in the Caribbean island of Martinique, which was then a French colony. One of the earliest recorded individuals with this surname in Martinique was Pierre-François Mulzac, born in 1735, who was a plantation owner and influential figure in the local community.
Another notable individual with the surname "MULZAC" was Jacques-Louis Mulzac, a French soldier and military officer who served during the Napoleonic Wars. He was born in 1785 in the town of Avranches, Normandy, and rose through the ranks to become a colonel in the French army. He participated in several major battles, including the Battle of Austerlitz in 1805.
During the 19th century, the name "MULZAC" also appeared in parts of North America, likely due to immigration from France and its colonies. For example, there are records of a family with this surname living in the city of New Orleans, Louisiana, in the mid-1800s, possibly tracing their roots back to Martinique.
Overall, the surname "MULZAC" has a rich history spanning several centuries and regions, with its origins rooted in the northern regions of France and later spreading to other parts of the world through migration and colonial expansion.
Demographics
Ancestry and ethnicity for Mulzac
Among Census respondents with the surname Mulzac, the largest self-reported group is Black at 83.5%. The next largest groups are White (8.3%) and Two or More Races (4.6%).
The bar chart below shows how Mulzac 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 Mulzac surname at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American83.5% · 91
- White8.3% · 9
- Two or more races4.6% · 5
- Hispanic or Latino1.8% · 2
- Asian and Pacific Islander1.8% · 2
Timeline
Historical Census data for Mulzac
Mulzac 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
#159,712
National surname rank
Recorded bearers 101
-12 bearers (-10.6%)
Per 100,000 0.03
Rank movement Down 22,929 places
2020
#150,205
National surname rank
Recorded bearers 109
+8 bearers (+7.9%)
Per 100,000 0.04
Rank movement Up 9,507 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #136,783 | 113 | 0.04 | First available Census row | First available Census row |
| 2010 | #159,712 | 101 | 0.03 | -12 bearers (-10.6%) | Down 22,929 places |
| 2020 | #150,205 | 109 | 0.04 | +8 bearers (+7.9%) | Up 9,507 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 Mulzac 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 | #159,712 | #150,205 | 6.0% |
| Count | 101 | 109 | 7.9% |
| Per 100K | 0.03 | 0.04 | 21.6% |
Between the 2010 and 2020 Census, the number of Mulzac bearers went from 101 to 109 (+7.9% change). The surname moved up 9,507 positions in the national ranking, going from #159,712 to #150,205.
FAQ
Mulzac surname: questions and answers
How many people in the U.S. have the surname Mulzac?
Name Census estimates that about 125 living Americans carry the surname Mulzac. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Mulzac?
Mulzac ranks #150,205 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 109 people with the surname Mulzac. That is different from the site's living-bearer estimate (125), 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 Mulzac.
Has Mulzac become more or less common over time?
Between 2010 and 2020, the surname Mulzac went from 101 recorded bearers to 109. That is an increase of 8 (+7.9%). In the national ranking it rose from #159,712 to #150,205.
What does the Census say about the background of Mulzac?
Among Census respondents with the surname Mulzac, the largest self-reported group is Black at 83.5%. The next largest groups are White (8.3%) and Two or More Races (4.6%). 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 Mulzac in the 2020 Census, accounting for 83.5% (91 people in the source table).
What is the full ancestry breakdown?
Mulzac appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Black (83.5%), White (8.3%), Two or More Races (4.6%). 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 Mulzac (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 Mulzac mean?
A French surname derived from the Old French word "mousac," meaning "mulberry." 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 Mulzac (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 Americans have the surname Mulzac?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.