Explore the Family Name Theilen
The meaning of Theilen
North German: 1. patronymic from Theile. 2. variant of Thielen.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Theilen in the United States?
The surname Theilen has seen a decrease in popularity, according to the Decennial U.S. Census data. In 2000, Theilen was ranked 49,249th in terms of popularity and had 401 people with this surname. This represented a proportion of 0.15 per 100,000 people. By 2010, however, the rank had dropped to 68,770, and the count had fallen to 286, representing a proportion of 0.1 per 100,000 people. This represents a drop in rank by 39.64% and a decrease in count by 28.68%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #49,249 | #68,770 | -39.64% |
| Count | 401 | 286 | -28.68% |
| Proportion per 100k | 0.15 | 0.1 | -33.33% |
Race and Ethnicity of people with the last name Theilen
In terms of ethnicity, the majority of individuals with the surname Theilen are white, as per the Decennial U.S. Census data. In 2000, 97.01% of those with the surname identified as white, but this figure decreased slightly to 95.8% by 2010. Meanwhile, the proportion of those identifying as Hispanic saw an increase from 2.49% in 2000 to 3.5% in 2010. There were no individuals with this surname who identified as Asian/Pacific Islander, Black, or American Indian and Alaskan Native during these years.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 97.01% | 95.8% | -1.25% |
| Hispanic | 2.49% | 3.5% | 40.56% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |