Explore the Family Name Dethlefs
The meaning of Dethlefs
North German and North Frisian: patronymic from the personal name Detlef, composed of Middle Low German theod ‘people, race’ + lēf ‘life, offshoot’.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Dethlefs in the United States?
Based on the Decennial U.S. Census data, the surname Dethlefs saw a slight decrease in popularity between 2000 and 2010. In 2000, Dethlefs was ranked as the 49,057th most popular surname in the United States, but by 2010 it dropped slightly to the 50,467th position, marking a decline of 2.87%. Despite this drop in rank, the actual count of people bearing the surname Dethlefs increased from 403 in 2000 to 414 in 2010, showing a growth rate of 2.73%. However, when looking at the proportion per 100,000 people, there was a decrease of 6.67% over this decade.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #49,057 | #50,467 | -2.87% |
| Count | 403 | 414 | 2.73% |
| Proportion per 100k | 0.15 | 0.14 | -6.67% |
Race and Ethnicity of people with the last name Dethlefs
In terms of ethnic identity, the Decennial U.S. Census data shows that the vast majority of individuals with the surname Dethlefs identify as white. This percentage decreased slightly from 98.26% in 2000 to 96.86% in 2010, showing a change of -1.42%. During this time frame, the census data also recorded a small increase in individuals identifying as Black, moving from 0.00% in 2000 to 1.21% in 2010. The percentages for Asian/Pacific Islander, those identifying with two or more races, Hispanic, and American Indian and Alaskan Native ethnicities remained unchanged during this period.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 98.26% | 96.86% | -1.42% |
| Black | 0% | 1.21% | 0% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 0% | 0% | 0% |
| Hispanic | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |