Explore the Family Name Diffey
The meaning of Diffey
English (Dorset): perhaps a nickname from Anglo-Norman French defaé, defieu ‘faithless, disloyal’. Compare Diffee.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Diffey in the United States?
Based on data from the Decennial U.S. Census, the surname Diffey has seen a decrease in popularity over the past decade. In 2000, it was ranked as the 66,073rd most common surname, but by 2010, it had dropped to the 72,568th place, marking a 9.83% decrease. The actual count of individuals sporting this surname also saw a slight decrease from 280 in the year 2000 to 268 in 2010, representing a 4.29% decline. The proportion per 100k people also fell by 10%, from 0.1 in 2000 to 0.09 in 2010.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #66,073 | #72,568 | -9.83% |
| Count | 280 | 268 | -4.29% |
| Proportion per 100k | 0.1 | 0.09 | -10% |
Race and Ethnicity of people with the last name Diffey
When it comes to ethnic identity associated with the surname Diffey, the Decennial U.S. Census data reveals a majority of individuals identifying as White. In 2000, this group constituted 96.43% and increased slightly to 97.39% in 2010. Notably, there was a disappearance of individuals identifying with two or more races, with a 100% decrease from 2.5% in 2000 to 0% in 2010. A new development in 2010 was the appearance of those identifying as Hispanic, accounting for 2.61% of the Diffeys. There were no reported instances of individuals identifying as Asian/Pacific Islander, Black, or American Indian and Alaskan Native in either census year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 96.43% | 97.39% | 1% |
| Hispanic | 0% | 2.61% | 0% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 2.5% | 0% | -100% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |