Explore the Family Name Clemensen

The meaning of Clemensen

Danish: patronymic from the personal name Clemens (see Clement). This surname is also found in Norway, but it is very rare there. In North America, this surname may also be an altered form of Danish and Norwegian cognates Clementsen and Klementsen. Compare Clemenson and Clemmensen.

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

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

The popularity of the surname Clemensen has seen a slight decline, according to data from the Decennial U.S. Census. In 2000, the name was ranked 68,172 in terms of popularity and saw a drop of 13.72% by 2010, putting it at rank 77,522. The count of individuals bearing this surname also decreased from 270 in 2000 to 247 in 2010, marking an 8.52% decrease. The proportion per 100,000 people similarly dropped by 20%, going from 0.1 in 2000 to 0.08 in 2010.

20002010Change
Rank#68,172#77,522-13.72%
Count270247-8.52%
Proportion per 100k0.10.08-20%

Race and Ethnicity of people with the last name Clemensen

Turning to ethnicity, the Decennial U.S. Census reveals that the majority of individuals with the Clemensen surname identified as White, with a slight increase of 0.02% from 95.93% in 2000 to 95.95% in 2010. The number of those identifying as Asian/Pacific Islander increased to 2.02% in 2010 from no representation in 2000. However, there were no changes for those identifying as having two or more races, Black, or American Indian and Alaskan Native. The percentage of those identifying as Hispanic decreased from 1.85% in 2000 to none in 2010.

20002010Change
White95.93%95.95%0.02%
Asian/Pacific Islander0%2.02%0%
Two or More Races0%0%0%
Hispanic1.85%0%0%
Black0%0%0%
American Indian and Alaskan Native0%0%0%