Explore the Family Name Thomassen
The meaning of Thomassen
Norwegian, Danish, Dutch, and North German: patronymic from the personal name Thomas. Some characteristic forenames: Scandinavian Tor, Jorgen, Lars, Oddmund, Per. Dutch Pieter, Frans.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Thomassen in the United States?
Based on the Decennial U.S. Census, the surname Thomassen has shown a slight increase in popularity between 2000 and 2010. Ranked at 45909 in 2000, it moved up to 45495 in 2010, representing a 0.9% change. The number of individuals with this surname also grew from 438 to 470 during this period, marking a rise of 7.31%. However, the proportion per 100,000 remained constant at 0.16.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #45,909 | #45,495 | 0.9% |
| Count | 438 | 470 | 7.31% |
| Proportion per 100k | 0.16 | 0.16 | 0% |
Race and Ethnicity of people with the last name Thomassen
As for ethnic identity, data from the Decennial U.S. Census revealed some shifts over the same decade. Predominantly carried by those of White ethnicity (96.58% in 2000 and 95.53% in 2010), the surname saw a decrease of 1.09% within this group. The percentage of those identifying as Asian/Pacific Islander dropped to zero, while representation among those identifying as two or more races and American Indian and Alaskan Native appeared for the first time in 2010, registering at 1.49% and 1.28% respectively. There were no recorded instances of the surname Thomassen amongst Black and Hispanic populations in either year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 96.58% | 95.53% | -1.09% |
| Two or More Races | 0% | 1.49% | 0% |
| American Indian and Alaskan Native | 0% | 1.28% | 0% |
| Asian/Pacific Islander | 1.37% | 0% | 0% |
| Hispanic | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |