2000
#7,010
National surname rank
Recorded bearers 4,410
First available Census row
Per 100,000 1.63
Rare Last name
Leduc
Derived from a place name meaning "the duke" in French, likely referring to a settlement owned by a duke.
According to the 2020 US Census Bureau surname tables, roughly 4,925 Americans carry the last name Leduc. That puts it at #7,478 in the national surname ranking, appearing at a frequency of 1.44 per 100,000 people (about 1 in 69,595 residents).
This page is the full Name Census profile for the Leduc 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
4.9K
1 in 69,595
Census rank
#7,478
2020 decennial data
Per 100,000
1.4
Frequency rate
Recorded bearers
4.3K
rare in the US
Popularity narrative
The Census Bureau recorded 4,295 bearers of the surname Leduc in its 2020 decennial surname file. At a rate of 1.44 per 100,000 residents, it holds the 7478th position in the national surname ranking.
Among Census respondents with the surname Leduc, the largest self-reported group is White at 88.3%. The next largest groups are Hispanic (5.9%) and Two or More Races (3.3%).
Origin
Meaning and origin of Leduc
The surname Leduc is of French origin, originating in the northern regions of France during the Middle Ages. The name is derived from the Old French phrase "le duc," meaning "the duke" or "the leader." This suggests that the name may have initially referred to someone who worked for or was associated with a duke or nobleman.
The earliest known records of the Leduc name can be traced back to the 12th century in various regions of northern France, including Normandy, Picardy, and Île-de-France. The name appears in old manuscripts and charters from this time period, often spelled in various ways such as Le Duc, Leduc, or Leduq.
One of the earliest documented individuals with the Leduc surname was Robert Leduc, a landowner and nobleman who lived in the town of Rouen, Normandy, in the late 12th century. Another notable figure was Jean Leduc, a prominent merchant and trader from the city of Amiens, Picardy, who lived in the early 13th century.
In the 14th century, the Leduc name was associated with several influential families in the region around Paris, including the Leduc family of Montmorency. This family owned vast estates and held significant political power during the reign of King Charles VI.
During the Renaissance period, a renowned French poet and playwright named Claude Leduc (1542-1614) gained fame for his works, which included plays and sonnets. His literary contributions helped to establish the Leduc name as a respected intellectual and artistic family in France.
Another notable figure was Jacques Leduc (1672-1737), a French architect and engineer who designed several notable buildings and structures in Paris during the early 18th century, including the Pont Royal bridge and the Church of Saint-Louis-en-l'Île.
As the Leduc name spread throughout France and beyond, it became associated with various place names, such as Leduc-sur-Mer, a coastal town in Normandy, and Leduc-en-Beauce, a village in the Loire Valley region. These place names likely originated from early Leduc families who settled and established themselves in these areas.
Demographics
Ancestry and ethnicity for Leduc
Among Census respondents with the surname Leduc, the largest self-reported group is White at 88.3%. The next largest groups are Hispanic (5.9%) and Two or More Races (3.3%).
The bar chart below shows how Leduc 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 Leduc surname at the time of the 2020 Census, not any inherent property of the name itself.
- White88.3% · 3,791
- Hispanic or Latino5.9% · 254
- Two or more races3.3% · 142
- Asian and Pacific Islander1.7% · 74
- Black or African American0.5% · 23
- American Indian and Alaska Native0.3% · 11
Timeline
Historical Census data for Leduc
Leduc 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
#7,373
National surname rank
Recorded bearers 4,518
+108 bearers (+2.4%)
Per 100,000 1.53
Rank movement Down 363 places
2020
#7,478
National surname rank
Recorded bearers 4,295
-223 bearers (-4.9%)
Per 100,000 1.44
Rank movement Down 105 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #7,010 | 4,410 | 1.63 | First available Census row | First available Census row |
| 2010 | #7,373 | 4,518 | 1.53 | +108 bearers (+2.4%) | Down 363 places |
| 2020 | #7,478 | 4,295 | 1.44 | -223 bearers (-4.9%) | Down 105 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 Leduc 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 | #7,373 | #7,478 | -1.4% |
| Count | 4,518 | 4,295 | -4.9% |
| Per 100K | 1.53 | 1.44 | -6.1% |
Between the 2010 and 2020 Census, the number of Leduc bearers went from 4,518 to 4,295 (-4.9% change). The surname moved down 105 positions in the national ranking, going from #7,373 to #7,478.
FAQ
Leduc surname: questions and answers
How many people in the U.S. have the surname Leduc?
Name Census estimates that about 4,925 living Americans carry the surname Leduc. Using the current population baseline, that works out to roughly 1 in 69,595 residents.
How common is Leduc?
Leduc ranks #7,478 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.44 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 4,295 people with the surname Leduc. That is different from the site's living-bearer estimate (4,925), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.44 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.44 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 Leduc.
Has Leduc become more or less common over time?
Between 2010 and 2020, the surname Leduc went from 4,518 recorded bearers to 4,295. That is a decrease of 223 (-4.9%). In the national ranking it fell from #7,373 to #7,478.
What does the Census say about the background of Leduc?
Among Census respondents with the surname Leduc, the largest self-reported group is White at 88.3%. The next largest groups are Hispanic (5.9%) and Two or More Races (3.3%). 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 Leduc in the 2020 Census, accounting for 88.3% (3,791 people in the source table).
What is the full ancestry breakdown?
Leduc appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (88.3%), Hispanic (5.9%), Two or More Races (3.3%). 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 Leduc (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 Leduc mean?
Derived from a place name meaning "the duke" in French, likely referring to a settlement owned by a duke. 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 Leduc (1.44 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 Leduc?
Our sister site HowManyOfMe.org answers how many people are called Leduc at a glance, with the living-bearer count up front.