Explore the Family Name Clausen

The meaning of Clausen

North German, Danish, and Norwegian: patronymic from the personal name Claus, a shortened form of Nikolaus (see Nicholas). In North America, this surname is also an altered form of the variants Claussen and Klausen. Compare Clauson 1. Some characteristic forenames: Scandinavian Holger, Bente, Ingard, Niels, Ansgar, Astrid, Bent, Bjorn, Erik, Evald, Jorgen, Knud.

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name Clausen in the United States?

Based on the Decennial U.S. Census, the popularity of the surname Clausen decreased slightly over the decade from 2000 to 2010. In 2000, Clausen was ranked as the 3,668th most popular surname in the United States with a count of 8,895 individuals. By 2010, it dropped to the 3,987th rank despite a minimal growth in count to 8,906. The proportion per 100k people also declined by 8.48 percent during this period.

Proportion per 100k3.33.02-8.48%

Race and Ethnicity of people with the last name Clausen

In terms of ethnicity, the data from the Decennial U.S. Census shows a diverse ethnic identity associated with the surname Clausen. In 2000, the majority of individuals bearing the Clausen name were of White ethnicity (95.47%). However, this proportion declined slightly to 94.31% in 2010. During this same period, the proportion of those identifying as Hispanic saw a significant growth of 34.69%, although their overall percentage remained relatively low at 2.64%. Similarly, there was an increase in the percentage of those identifying as Black and Asian/Pacific Islander, whereas the proportion of American Indian and Alaskan Native decreased.

Two or More Races1.1%1.26%14.55%
Asian/Pacific Islander0.56%0.67%19.64%
American Indian and Alaskan Native0.45%0.38%-15.56%

Clausen 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 Clausen is British & Irish, which comprises 32.4% of all ancestry found in people with the surname. The next two most common ancestries are French & German (28.3%) and Scandinavian (18.3%). Additional ancestries include Eastern European, Korean, Spanish & Portuguese, Italian, and Ashkenazi Jewish.

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British & Irish32.4%
French & German28.3%

Possible origins of the surname Clausen

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 Clausen have recent ancestry locations in United Kingdom and Ireland.

RECENT ANCESTRY LocationPercentage
Greater London, United Kingdom73.60%
Tyne And Wear, United Kingdom73.20%
Greater Manchester, United Kingdom73.20%
Merseyside, United Kingdom73.20%
Glasgow City, United Kingdom73.20%

What Clausen 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 Clausen is R-Z282, which is predominantly found among people with European ancestry. Haplogroup R-Z282 is descended from haplogroup R-M420. Other common haplogroups include I-L22 and R-P312, which are predominantly found among people with European and European ancestry. Other surnames with similar common haplogroups are: Beckman, Paulsen, Christiansen, Martens, Monson, Jacobsen, Witte, Jansen, Ahrens, Samuelson.

The most common maternal haplogroups of people with Clausen surname are: H3, H, H1. These most commonly trace back to individuals of European ancestry.

clausenPaternal Haplogroup Origins R-M420

Your 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.

Maternal Haplo Image

What do people with the surname Clausen 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.



Chocolate Ice Cream

Prefers chocolate flavored ice cream over other flavors.

"Clausen" Surname 41.8%

23andMe Users 41.3%




When sounds made by others, like the sound of chewing or yawning, provoke strong emotional reactions in an individual.

"Clausen" Surname 18.5%

23andMe Users 27.9%



Sugary Drink

Drinks one or more sugary drinks per day.

"Clausen" Surname 18.0%

23andMe Users 21.1%




A severe headache characterized by intense pain, sensitivity to light and sound, and often accompanied by nausea and vomiting.

"Clausen" Surname 15.3%

23andMe Users 16.4%

Are health conditions linked to the last name Clausen?

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 Clausen are shown below. Important Note: not everyone with a disease allele will develop these health condition

Age-Related Macular Degeneration

Y402H variant

Age-related macular degeneration (AMD) is the most common cause of irreversible vision loss among older adults. The disease results in damage to the central part of the retina (the macula), impairing vision needed for reading, driving, or even recognizing faces. The 23andMe Health + Ancestry DNA test includes the two most common variants associated with an increased risk of developing the condition: the Y402H variant in the CFH gene and the A69S variant in the ARMS2 gene. Learn more about Age-Related Macular Degeneration

British & Irish 62.1%

23andMe Users 57.2%