Explore the Family Name Dieffenbach
The meaning of Dieffenbach
German: variant of Diefenbach. Some characteristic forenames: German Otto.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Dieffenbach in the United States?
Based on the Decennial U.S. Census, the surname Dieffenbach saw a slight decrease in popularity from 2000 to 2010. In 2000, the surname was ranked 31,235th and slipped to 31,383rd by 2010, marking a -0.47% change. However, the count of people carrying this surname increased from 702 to 738 during this decade, which is an increase of 5.13%. The proportion per 100,000 people also decreased slightly from 0.26 to 0.25.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #31,235 | #31,383 | -0.47% |
| Count | 702 | 738 | 5.13% |
| Proportion per 100k | 0.26 | 0.25 | -3.85% |
Race and Ethnicity of people with the last name Dieffenbach
In terms of ethnicity, the Decennial U.S. Census data shows that the majority of individuals with the surname Dieffenbach identify as White, although there has been a slight decrease from 97.72% in 2000 to 96.88% in 2010. Interestingly, the proportion identifying as Hispanic witnessed the most significant growth, increasing by 71.83% over the same period. Those identifying as two or more ethnicities also saw an increase from 0.85% to 1.08%. According to the census information, there were no individuals with this surname who identified as Asian/Pacific Islander, Black, or American Indian and Alaskan Native in either year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 97.72% | 96.88% | -0.86% |
| Hispanic | 0.71% | 1.22% | 71.83% |
| Two or More Races | 0.85% | 1.08% | 27.06% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |