Explore the Family Name Seff
The meaning of Seff
1. Jewish (Ashkenazic): altered form of Zeff, or a shortened form of some original Ashkenazic surname. 2. Welsh (Monmouthshire): unexplained.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Seff in the United States?
Based on data from the Decennial U.S. Census, the popularity of the surname Seff saw a decrease between 2000 and 2010. In 2000, it ranked as the 91,404th most popular last name in the United States, but dropped to the 101,247th spot by 2010, showing a decline of approximately 10.77%. The count of individuals with the Seff surname also fell from 187 in 2000 to 178 in 2010, a decrease of about 4.81%. The proportion of people named Seff per 100,000 residents dropped by 14.29% over this same period.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #91,404 | #101,247 | -10.77% |
| Count | 187 | 178 | -4.81% |
| Proportion per 100k | 0.07 | 0.06 | -14.29% |
Race and Ethnicity of people with the last name Seff
Regarding ethnic identity, the Decennial U.S. Census data shows that nearly all individuals bearing the Seff surname identify as White. In 2000, approximately 97.86% of Seffs identified as such, and this figure rose slightly to about 98.31% in 2010. The data showed no changes for other categories including Asian/Pacific Islander, Two or more races, Hispanic, Black, and American Indian and Alaskan Native.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 97.86% | 98.31% | 0.46% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 0% | 0% | 0% |
| Hispanic | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |