Explore the Family Name Leblanc
The meaning of Leblanc
1. French: descriptive nickname for a man with light blond hair or a pale complexion, a variant of Blanc ‘white’, with fused masculine definite article le. Compare Lablanc. 2. West Indian (mainly Haiti): nickname, possibly ironic, of the same origin as 1 above. Compare Blanc. Some characteristic forenames: French Armand, Pierre, Andre, Emile, Jacques, Camille, Marcel, Lucien, Normand, Alcide, Gaston, Leonce.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Leblanc in the United States?
Based on data from the Decennial U.S. Census, the popularity of the surname Leblanc has experienced subtle changes between 2000 and 2010. In 2000, Leblanc was ranked as the 767th most prevalent name in the United States, but by 2010, it had slipped to the 815th position, a decline of approximately 6.26%. Despite this drop in rank, the actual count of individuals with the Leblanc surname increased from 40,923 to 42,575, a growth rate of 4.04%. However, the proportion of the population identifying with the Leblanc surname per 100,000 people dipped almost 5%, from 15.17 in 2000 to 14.43 in 2010.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #767 | #815 | -6.26% |
| Count | 40,923 | 42,575 | 4.04% |
| Proportion per 100k | 15.17 | 14.43 | -4.88% |
Race and Ethnicity of people with the last name Leblanc
Regarding ethnicity, the Decennial U.S. Census data shows interesting shifts in the ethnic identity distribution for the Leblanc surname between 2000 and 2010. The majority of people with the Leblanc name identified as White, although this percentage decreased slightly from 88.09% to 86.17% during the decade. The percentage of those identifying as Black also increased modestly from 7.94% to 8.75%. The most notable increase was seen in the Hispanic category, which grew by an impressive 41.48%, albeit from a relatively small base of 1.76% to 2.49%. Smaller increases were observed in the categories of Asian/Pacific Islander and American Indian/Alaskan Native, while those identifying with two or more races also noted a rise of 13.39%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 88.09% | 86.17% | -2.18% |
| Black | 7.94% | 8.75% | 10.2% |
| Hispanic | 1.76% | 2.49% | 41.48% |
| Two or More Races | 1.27% | 1.44% | 13.39% |
| American Indian and Alaskan Native | 0.58% | 0.68% | 17.24% |
| Asian/Pacific Islander | 0.36% | 0.46% | 27.78% |
Leblanc ancestry composition
23andMe computes an ancestry breakdown for each customer. People may have ancestry from just one population or they may have ancestry from several populations. The most commonly-observed ancestry found in people with the surname Leblanc is British & Irish, which comprises 36.4% of all ancestry found in people with the surname. The next two most common ancestries are French & German (35.3%) and Spanish & Portuguese (9.3%). Additional ancestries include Italian, Eastern European, Scandinavian, Indigenous American, and Nigerian.
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| ANCESTRY BREAKDOWN | COMPOSITION |
|---|---|
| British & Irish | 36.4% |
| French & German | 35.3% |
| Spanish & Portuguese | 9.3% |
| Other | 19.0% |
Possible origins of the surname Leblanc
Your DNA provides clues about where your recent ancestors may have lived. Having many distant relatives in the same location suggests that you may all share common ancestry there. Locations with many distant relatives can also be places where people have migrated recently, such as large cities. If a large number of individuals who share your surname have distant relatives in a specific area, it could indicate a connection between your surname and that location, stemming from either recent ancestral ties or migration.
Based on 23andMe data, people with last name Leblanc have recent ancestry locations in the United Kingdom of Great Britain and Northern Ireland and Ireland.
| RECENT ANCESTRY Location | Percentage |
|---|---|
| Greater London, United Kingdom | 70.70% |
| Merseyside, United Kingdom | 70.10% |
| Greater Manchester, United Kingdom | 70.10% |
| Glasgow City, United Kingdom | 70.00% |
| West Midlands, United Kingdom | 69.30% |
What Leblanc haplogroups can tell you
Haplogroups are genetic population groups that share a common ancestor on either your paternal or maternal line. These paternal and maternal haplogroups shed light on your genetic ancestry and help tell the story of your family.
The top paternal haplogroup of people with the surname Leblanc is R-L21, which is predominantly found among people with European ancestry. Haplogroup R-L21 is descended from haplogroup R-M343. Other common haplogroups include R-P311 and R-L2, which are predominantly found among people with European and European ancestry. Other surnames with similar common haplogroups are: Sasser, Sherrill, Thayer, Jacks, Bowser, Tupper, Broom, Rossiter, Broome, Dana.
The most common maternal haplogroups of people with Leblanc surname are: H1, T2b, H. These most commonly trace back to individuals of European ancestry.
Paternal Haplogroup Origins R-M343Your maternal lineage may be linked to Marie Antoinette
Because it is so dominant in the general European population, haplogroup H also appears quite frequently in the continent's royal houses. Marie Antoinette, an Austrian Hapsburg who married into the French royal family, inherited the haplogroup from her maternal ancestors. So did Prince Philip, Duke of Edinburgh, whose recorded genealogy traces his female line to Bavaria. Scientists also discovered that famed 16th century astronomer Nicolaus Copernicus traced his maternal lineages to haplogroup H.
What do people with the surname Leblanc have in common?
Spoiler alert: it's complicated. People with the same last name are usually no more genetically similar than a randomly sampled group of people from the same population. That said, people with the same surname are more likely to have similar ancestries than randomly sampled individuals. The reason is the tendency of people with similar cultural or geographical backgrounds to preferentially mate with one another. That's why people who share a surname may be more likely to share traits and tendencies in common than people within the general population. Check out the percentages below to see the prevalences of tastes, habits, and traits of people with your surname compared with prevalences among 23andMe users.
Preferences
Chocolate Ice Cream
Prefers chocolate flavored ice cream over other flavors.
"Leblanc" Surname 43.6%
23andMe Users 41.3%
Traits
Misophonia
When sounds made by others, like the sound of chewing or yawning, provoke strong emotional reactions in an individual.
"Leblanc" Surname 35.1%
23andMe Users 27.9%
Habits
Sugary Drink
Drinks one or more sugary drinks per day.
"Leblanc" Surname 21.8%
23andMe Users 21.1%
Wellness
Migraine
A severe headache characterized by intense pain, sensitivity to light and sound, and often accompanied by nausea and vomiting.
"Leblanc" Surname 17.8%
23andMe Users 16.4%
Are health conditions linked to the last name Leblanc?
The short answer is that, if there is an association between surname and health, it's usually more about your ancestry than your name. Individuals with a given surname are no more genetically similar than the general population but often have similar ancestries. The populations of people associated with those shared ancestries often have sets of genetic variations, also known as alleles, in common. Some of those alleles are associated with a greater likelihood of developing certain diseases.
Disease variant frequency by ancestry
Disease allele frequencies in populations associated with the surname Leblanc are shown below. Important Note: not everyone with a disease allele will develop these health condition