2000
#11,580
National surname rank
Recorded bearers 2,488
First available Census row
Per 100,000 0.92
Rare Last name
Marcoux
A French topographic surname for someone living near a marsh or swamp.
According to the 2020 US Census Bureau surname tables, roughly 2,769 Americans carry the last name Marcoux. That puts it at #12,296 in the national surname ranking, appearing at a frequency of 0.81 per 100,000 people (about 1 in 123,783 residents).
This page is the full Name Census profile for the Marcoux 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
2.8K
1 in 123,783
Census rank
#12,296
2020 decennial data
Per 100,000
0.8
Frequency rate
Recorded bearers
2.4K
rare in the US
Popularity narrative
The Census Bureau recorded 2,415 bearers of the surname Marcoux in its 2020 decennial surname file. At a rate of 0.81 per 100,000 residents, it holds the 12296th position in the national surname ranking.
Among Census respondents with the surname Marcoux, the largest self-reported group is White at 93.3%. The next largest groups are Hispanic (3.0%) and Two or More Races (2.7%).
Origin
Meaning and origin of Marcoux
The surname Marcoux originated in France, specifically in the region of Normandy. It is believed to have derived from the Old French word "marcou," which translates to "little market" or "small marketplace." The earliest records of the name date back to the 11th century, when it was spelled "Marcou."
During the Middle Ages, the Marcoux family was prominent in the area around the town of Rouen, where they were known as landowners and merchants. One of the earliest mentions of the name can be found in a charter from the year 1195, which refers to a certain Raoul Marcoux, who owned a parcel of land near the village of Petit-Couronne.
As the name spread throughout Normandy and other parts of France, it underwent various spelling changes, including "Marcault," "Marcaut," and eventually settling on the modern form, "Marcoux." In the 13th century, a branch of the family established itself in the region of Anjou, where they were recorded as owners of a small market town called Marcouville.
One notable bearer of the Marcoux name was Étienne Marcoux, a French soldier who fought in the Hundred Years' War. He was born around 1380 in the village of Marcouville and gained recognition for his bravery in the Battle of Agincourt in 1415. Another prominent figure was Jean Marcoux, a wealthy merchant from Rouen who lived during the 16th century and was known for his philanthropic efforts, including the establishment of a school for underprivileged children.
In the 17th century, the Marcoux family expanded their influence to other parts of Europe, with some members settling in the Low Countries and even crossing the Atlantic to establish themselves in the French colonies of North America. One such individual was Pierre Marcoux, who was born in 1642 in the village of Petit-Couronne and later became one of the first settlers in the Canadian province of Quebec.
Another notable bearer of the Marcoux name was François Marcoux, a French explorer and cartographer who lived in the late 18th century. He was born in 1752 in the town of Honfleur and is best known for his expeditions to the Caribbean, where he mapped several islands and contributed to the advancement of nautical knowledge.
Throughout its history, the Marcoux surname has been associated with various occupations, including merchants, landowners, soldiers, explorers, and cartographers. While its origins can be traced back to the small marketplaces of medieval Normandy, the name has since spread across the globe, carried by generations of individuals who have left their mark in different fields and regions.
Demographics
Ancestry and ethnicity for Marcoux
Among Census respondents with the surname Marcoux, the largest self-reported group is White at 93.3%. The next largest groups are Hispanic (3.0%) and Two or More Races (2.7%).
The bar chart below shows how Marcoux 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 Marcoux surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.3% · 2,253
- Hispanic or Latino3.0% · 72
- Two or more races2.7% · 66
- Black or African American0.5% · 11
- Asian and Pacific Islander0.3% · 8
- American Indian and Alaska Native0.2% · 5
Timeline
Historical Census data for Marcoux
Marcoux 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
#12,399
National surname rank
Recorded bearers 2,507
+19 bearers (+0.8%)
Per 100,000 0.85
Rank movement Down 819 places
2020
#12,296
National surname rank
Recorded bearers 2,415
-92 bearers (-3.7%)
Per 100,000 0.81
Rank movement Up 103 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #11,580 | 2,488 | 0.92 | First available Census row | First available Census row |
| 2010 | #12,399 | 2,507 | 0.85 | +19 bearers (+0.8%) | Down 819 places |
| 2020 | #12,296 | 2,415 | 0.81 | -92 bearers (-3.7%) | Up 103 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 Marcoux 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 | #12,399 | #12,296 | 0.8% |
| Count | 2,507 | 2,415 | -3.7% |
| Per 100K | 0.85 | 0.81 | -4.9% |
Between the 2010 and 2020 Census, the number of Marcoux bearers went from 2,507 to 2,415 (-3.7% change). The surname moved up 103 positions in the national ranking, going from #12,399 to #12,296.
FAQ
Marcoux surname: questions and answers
How many people in the U.S. have the surname Marcoux?
Name Census estimates that about 2,769 living Americans carry the surname Marcoux. Using the current population baseline, that works out to roughly 1 in 123,783 residents.
How common is Marcoux?
Marcoux ranks #12,296 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.81 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 2,415 people with the surname Marcoux. That is different from the site's living-bearer estimate (2,769), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.81 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.81 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 Marcoux.
Has Marcoux become more or less common over time?
Between 2010 and 2020, the surname Marcoux went from 2,507 recorded bearers to 2,415. That is a decrease of 92 (-3.7%). In the national ranking it rose from #12,399 to #12,296.
What does the Census say about the background of Marcoux?
Among Census respondents with the surname Marcoux, the largest self-reported group is White at 93.3%. The next largest groups are Hispanic (3.0%) and Two or More Races (2.7%). 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 Marcoux in the 2020 Census, accounting for 93.3% (2,253 people in the source table).
What is the full ancestry breakdown?
Marcoux appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.3%), Hispanic (3.0%), Two or More Races (2.7%). 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 Marcoux (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 Marcoux mean?
A French topographic surname for someone living near a marsh or swamp. 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 Marcoux (0.81 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 Marcoux?
If you just want to know how many people are called Marcoux, HowManyOfMe.org gives you the headline number in one glance.