2000
#58,553
National surname rank
Recorded bearers 324
First available Census row
Per 100,000 0.12
Very Rare Last name
Ducommun
A surname derived from the French term "du commun", meaning "of the common" or "commonplace".
According to the 2020 US Census Bureau surname tables, roughly 398 Americans carry the last name Ducommun. That puts it at #62,349 in the national surname ranking, appearing at a frequency of 0.12 per 100,000 people (about 1 in 861,192 residents).
This page is the full Name Census profile for the Ducommun 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
398
1 in 861,192
Census rank
#62,349
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
347
very rare in the US
Popularity narrative
The Census Bureau recorded 347 bearers of the surname Ducommun in its 2020 decennial surname file. At a rate of 0.12 per 100,000 residents, it holds the 62349th position in the national surname ranking.
Among Census respondents with the surname Ducommun, the largest self-reported group is White at 91.4%. The next largest groups are Two or More Races (3.5%) and Hispanic (2.9%).
Origin
Meaning and origin of Ducommun
The surname DUCOMMUN originated in the Francophone regions of Switzerland, particularly in the western cantons of Vaud and Geneva. Its roots can be traced back to the early 16th century, deriving from the old French term "du commun," which translates to "of the common" or "of the people." This suggests that the name may have initially referred to individuals who belonged to the general populace or commoners.
One of the earliest recorded instances of the DUCOMMUN surname appears in the archives of the city of Lausanne, dating back to 1532. In this document, a certain Jean DUCOMMUN is mentioned as a resident of the city. It is believed that the name may have originated as a descriptive moniker, distinguishing those individuals from the nobility or clergy.
Throughout the subsequent centuries, the DUCOMMUN family name can be found in various historical records and documents across the region. For instance, in the 1600s, there are mentions of a Pierre DUCOMMUN, a merchant and landowner in the village of Bursins, near Nyon.
In the late 18th century, a notable figure bearing the DUCOMMUN surname was Jean-Pierre DUCOMMUN (1734-1820), a Swiss painter and engraver renowned for his landscape paintings and etchings of the Swiss Alps. His works are now part of the collections of several prestigious museums, including the Musée d'Art et d'Histoire in Geneva.
Another significant individual with this surname was François-Henri DUCOMMUN (1789-1859), a Swiss politician and historian from Vaud. He served as a member of the Grand Council of Vaud and authored several historical works, including a book on the history of the Canton of Vaud during the Helvetic Republic.
In the 19th century, the DUCOMMUN family also made their mark in the field of watchmaking. Auguste DUCOMMUN (1826-1901), a watchmaker from Geneva, was known for his innovative contributions to the manufacturing of watch components and the development of precision timekeeping instruments.
Additionally, there are mentions of a Jean-Jacques DUCOMMUN (1805-1874), a Swiss artist and painter from Vaud, whose works depicted landscapes and scenes from rural life in the region.
While the DUCOMMUN surname originated in the French-speaking regions of Switzerland, it eventually spread to other parts of Europe and beyond, carried by individuals who migrated or established themselves in different locations.
Demographics
Ancestry and ethnicity for Ducommun
Among Census respondents with the surname Ducommun, the largest self-reported group is White at 91.4%. The next largest groups are Two or More Races (3.5%) and Hispanic (2.9%).
The bar chart below shows how Ducommun 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 Ducommun surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.4% · 317
- Two or more races3.5% · 12
- Hispanic or Latino2.9% · 10
- Black or African American1.4% · 5
- Asian and Pacific Islander0.9% · 3
Timeline
Historical Census data for Ducommun
Ducommun 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
#56,195
National surname rank
Recorded bearers 364
+40 bearers (+12.3%)
Per 100,000 0.12
Rank movement Up 2,358 places
2020
#62,349
National surname rank
Recorded bearers 347
-17 bearers (-4.7%)
Per 100,000 0.12
Rank movement Down 6,154 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #58,553 | 324 | 0.12 | First available Census row | First available Census row |
| 2010 | #56,195 | 364 | 0.12 | +40 bearers (+12.3%) | Up 2,358 places |
| 2020 | #62,349 | 347 | 0.12 | -17 bearers (-4.7%) | Down 6,154 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 Ducommun 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 | #56,195 | #62,349 | -11.0% |
| Count | 364 | 347 | -4.7% |
| Per 100K | 0.12 | 0.12 | -3.3% |
Between the 2010 and 2020 Census, the number of Ducommun bearers went from 364 to 347 (-4.7% change). The surname moved down 6,154 positions in the national ranking, going from #56,195 to #62,349.
FAQ
Ducommun surname: questions and answers
How many people in the U.S. have the surname Ducommun?
Name Census estimates that about 398 living Americans carry the surname Ducommun. Using the current population baseline, that works out to roughly 1 in 861,192 residents.
How common is Ducommun?
Ducommun ranks #62,349 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.12 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 347 people with the surname Ducommun. That is different from the site's living-bearer estimate (398), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.12 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.12 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 Ducommun.
Has Ducommun become more or less common over time?
Between 2010 and 2020, the surname Ducommun went from 364 recorded bearers to 347. That is a decrease of 17 (-4.7%). In the national ranking it fell from #56,195 to #62,349.
What does the Census say about the background of Ducommun?
Among Census respondents with the surname Ducommun, the largest self-reported group is White at 91.4%. The next largest groups are Two or More Races (3.5%) and Hispanic (2.9%). 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 Ducommun in the 2020 Census, accounting for 91.4% (317 people in the source table).
What is the full ancestry breakdown?
Ducommun appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.4%), Two or More Races (3.5%), Hispanic (2.9%). 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 Ducommun (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 Ducommun mean?
A surname derived from the French term "du commun", meaning "of the common" or "commonplace". 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 Ducommun (0.12 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 surname Ducommun?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.