2000
#116,835
National surname rank
Recorded bearers 138
First available Census row
Per 100,000 0.05
Very Rare Last name
Ducham
French surname derived from the Latin "de Calmis", meaning "from Calmes".
According to the 2020 US Census Bureau surname tables, roughly 120 Americans carry the last name Ducham. That puts it at #152,989 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,856,286 residents).
This page is the full Name Census profile for the Ducham 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
120
1 in 2,856,286
Census rank
#152,989
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
105
very rare in the US
Popularity narrative
The Census Bureau recorded 105 bearers of the surname Ducham in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152989th position in the national surname ranking.
Among Census respondents with the surname Ducham, the largest self-reported group is White at 87.6%. The next largest groups are Hispanic (8.6%) and Two or More Races (3.8%).
Origin
Meaning and origin of Ducham
The surname DUCHAM has its origins in France, with records dating back to the late 15th century. It is believed to be derived from the Old French word "ducham," which referred to a type of farmland or agricultural holding. The earliest known bearers of the name were likely farmers or landowners in the rural regions of northern France.
One of the earliest recorded instances of the name appears in a medieval tax record from the year 1487, which lists a Jacques Ducham as a resident of the village of Montdidier, in the historical province of Picardy. This suggests that the name had already established itself in that area by the late 15th century.
In the 16th century, the Ducham name can be found in several parish records and legal documents from the Normandy region. A notable example is Jean Ducham, born in 1532 in the town of Rouen, who was a merchant and landowner. His descendants continued to use the name in the Rouen area for several generations.
During the 17th and 18th centuries, the Ducham name spread to other parts of France, including Paris and the surrounding regions. One prominent figure from this era was Pierre Ducham, a lawyer and political advisor who lived from 1675 to 1742. He served as a legal counsel to the French nobility and is mentioned in several historical accounts of the time.
As the Ducham family expanded, some members ventured beyond the borders of France. In the late 18th century, a branch of the family settled in the French-speaking regions of Switzerland, where they adopted the spelling "Ducham." One noteworthy individual from this line was Marie Ducham, born in Geneva in 1789, who was a renowned painter and portraitist during the Romantic era.
Another significant bearer of the Ducham name was Jules Ducham, born in Paris in 1822. He was a prominent engineer and inventor, known for his contributions to the development of early steam engines and industrial machinery. His work played a crucial role in the advancement of French manufacturing during the Industrial Revolution.
While the Ducham surname has its deepest roots in France, it has since spread to other parts of the world through immigration and migration. However, the name's origins can be traced back to the rural farming communities of northern France in the late medieval and Renaissance periods.
Demographics
Ancestry and ethnicity for Ducham
Among Census respondents with the surname Ducham, the largest self-reported group is White at 87.6%. The next largest groups are Hispanic (8.6%) and Two or More Races (3.8%).
The bar chart below shows how Ducham 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 Ducham surname at the time of the 2020 Census, not any inherent property of the name itself.
- White87.6% · 92
- Hispanic or Latino8.6% · 9
- Two or more races3.8% · 4
Timeline
Historical Census data for Ducham
Ducham 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
#146,201
National surname rank
Recorded bearers 113
-25 bearers (-18.1%)
Per 100,000 0.04
Rank movement Down 29,366 places
2020
#152,989
National surname rank
Recorded bearers 105
-8 bearers (-7.1%)
Per 100,000 0.04
Rank movement Down 6,788 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #116,835 | 138 | 0.05 | First available Census row | First available Census row |
| 2010 | #146,201 | 113 | 0.04 | -25 bearers (-18.1%) | Down 29,366 places |
| 2020 | #152,989 | 105 | 0.04 | -8 bearers (-7.1%) | Down 6,788 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 Ducham 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 | #146,201 | #152,989 | -4.6% |
| Count | 113 | 105 | -7.1% |
| Per 100K | 0.04 | 0.04 | -12.2% |
Between the 2010 and 2020 Census, the number of Ducham bearers went from 113 to 105 (-7.1% change). The surname moved down 6,788 positions in the national ranking, going from #146,201 to #152,989.
FAQ
Ducham surname: questions and answers
How many people in the U.S. have the surname Ducham?
Name Census estimates that about 120 living Americans carry the surname Ducham. Using the current population baseline, that works out to roughly 1 in 2,856,286 residents.
How common is Ducham?
Ducham ranks #152,989 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 105 people with the surname Ducham. That is different from the site's living-bearer estimate (120), 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 Ducham.
Has Ducham become more or less common over time?
Between 2010 and 2020, the surname Ducham went from 113 recorded bearers to 105. That is a decrease of 8 (-7.1%). In the national ranking it fell from #146,201 to #152,989.
What does the Census say about the background of Ducham?
Among Census respondents with the surname Ducham, the largest self-reported group is White at 87.6%. The next largest groups are Hispanic (8.6%) and Two or More Races (3.8%). 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 Ducham in the 2020 Census, accounting for 87.6% (92 people in the source table).
What is the full ancestry breakdown?
Ducham appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (87.6%), Hispanic (8.6%), Two or More Races (3.8%). 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 Ducham (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 Ducham mean?
French surname derived from the Latin "de Calmis", meaning "from Calmes". 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 Ducham (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 surname Ducham?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.