2010
#132,206
National surname rank
Recorded bearers 128
First available Census row
Per 100,000 0.04
Very Rare Last name
Dumon
A surname derived from the French words "du" meaning "of" and "mon" meaning "hill" or "mountain".
According to the 2020 US Census Bureau surname tables, roughly 139 Americans carry the last name Dumon. That puts it at #141,309 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,465,859 residents).
This page is the full Name Census profile for the Dumon 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
139
1 in 2,465,859
Census rank
#141,309
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
121
very rare in the US
Popularity narrative
The Census Bureau recorded 121 bearers of the surname Dumon in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 141309th position in the national surname ranking.
Among Census respondents with the surname Dumon, the largest self-reported group is White at 62.0%. The next largest groups are Asian/Pacific Islander (23.1%) and Hispanic (8.3%).
Origin
Meaning and origin of Dumon
The surname DUMON originated in France, with its earliest recorded instances dating back to the 12th century. It is believed to have derived from the Old French word "dumon," meaning "hill" or "mound," suggesting that the name was initially given to someone who lived near a prominent hill or mound.
One of the earliest mentions of the DUMON name can be found in the Cartulaire de Notre-Dame de Chartres, a medieval manuscript compiled in the late 12th century, which recorded transactions and properties related to the Notre-Dame de Chartres cathedral. This document contains references to individuals bearing the surname DUMON.
During the 13th century, the DUMON name appeared in various legal documents and records across northern France, particularly in the regions of Picardy and Normandy. Some of these records include the Cartulaire de l'abbaye de Saint-Corneille de Compiègne and the Rôles des fiefs du Comté de Champagne.
In the 14th century, the DUMON name gained prominence in the city of Paris, where several notable individuals bore the surname. One such individual was Jean DUMON, a prominent merchant and landowner who lived from 1320 to 1387. Another was Guillaume DUMON, a skilled calligrapher and illuminator who worked on several manuscripts for the French royal court between 1350 and 1415.
The 15th century saw the DUMON name spread across other regions of France, including Burgundy and Brittany. One notable figure from this period was Jeanne DUMON, a noblewoman who served as a lady-in-waiting to Queen Marie of Anjou in the mid-1400s.
In the 16th century, the DUMON name appeared in various records related to the French Wars of Religion, with some individuals bearing the surname fighting on both Catholic and Protestant sides. One prominent figure was Pierre DUMON, a Huguenot (French Protestant) soldier who served under Henry IV and was known for his bravery in battle, living from 1560 to 1628.
As the centuries passed, the DUMON name continued to be found throughout France, with various individuals bearing the surname making contributions in various fields, including the arts, literature, and academia. One notable figure from the 18th century was François DUMON, a renowned painter and sculptor who worked in the Baroque and Rococo styles, living from 1710 to 1785.
Throughout its history, the DUMON name has been subject to various spelling variations, such as DUMONT, DUMOND, and DHUMONT, reflecting the regional variations in pronunciation and orthography. However, the core meaning and origins of the name have remained consistent, tracing back to its Old French roots and association with hills or mounds.
Demographics
Ancestry and ethnicity for Dumon
Among Census respondents with the surname Dumon, the largest self-reported group is White at 62.0%. The next largest groups are Asian/Pacific Islander (23.1%) and Hispanic (8.3%).
The bar chart below shows how Dumon 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 Dumon surname at the time of the 2020 Census, not any inherent property of the name itself.
- White62.0% · 75
- Asian and Pacific Islander23.1% · 28
- Hispanic or Latino8.3% · 10
- Black or African American5.0% · 6
- Two or more races1.7% · 2
Timeline
Historical Census data for Dumon
Dumon 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
#141,309
National surname rank
Recorded bearers 121
-7 bearers (-5.5%)
Per 100,000 0.04
Rank movement Down 9,103 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #132,206 | 128 | 0.04 | First available Census row | First available Census row |
| 2020 | #141,309 | 121 | 0.04 | -7 bearers (-5.5%) | Down 9,103 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 Dumon 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 | #132,206 | #141,309 | -6.9% |
| Count | 128 | 121 | -5.5% |
| Per 100K | 0.04 | 0.04 | 1.2% |
Between the 2010 and 2020 Census, the number of Dumon bearers went from 128 to 121 (-5.5% change). The surname moved down 9,103 positions in the national ranking, going from #132,206 to #141,309.
FAQ
Dumon surname: questions and answers
How many people in the U.S. have the surname Dumon?
Name Census estimates that about 139 living Americans carry the surname Dumon. Using the current population baseline, that works out to roughly 1 in 2,465,859 residents.
How common is Dumon?
Dumon ranks #141,309 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 121 people with the surname Dumon. That is different from the site's living-bearer estimate (139), 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 Dumon.
Has Dumon become more or less common over time?
Between 2010 and 2020, the surname Dumon went from 128 recorded bearers to 121. That is a decrease of 7 (-5.5%). In the national ranking it fell from #132,206 to #141,309.
What does the Census say about the background of Dumon?
Among Census respondents with the surname Dumon, the largest self-reported group is White at 62.0%. The next largest groups are Asian/Pacific Islander (23.1%) and Hispanic (8.3%). 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 Dumon in the 2020 Census, accounting for 62.0% (75 people in the source table).
What is the full ancestry breakdown?
Dumon appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (62.0%), Asian/Pacific Islander (23.1%), Hispanic (8.3%). 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 Dumon (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 Dumon mean?
A surname derived from the French words "du" meaning "of" and "mon" meaning "hill" or "mountain". 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 Dumon (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 common is the surname Dumon?
See how common the surname Dumon is on HowManyOfMe.org, our sister site built around that single question.