Explore the Family Name Koslow
The meaning of Koslow
Germanized or Americanized form of Polish Kozłów (see Kozlow), of its Sorbian cognate (habitational name) Kozłów, and of Russian and Jewish (eastern Ashkenazic) Kozlov.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Koslow in the United States?
Based on the Decennial U.S. Census data, the surname Koslow experienced a decrease in popularity between the years 2000 and 2010. In 2000, Koslow ranked 32,609 in terms of frequency amongst surnames in America, but by 2010, it had dropped to 36,838, marking a decline of approximately 12.97%. The total count of individuals with this surname also decreased from 664 people in 2000 to 606 in 2010, a reduction of around 8.73%. Consequently, the proportion of individuals with the surname Koslow per 100k people decreased by 16.0% over the decade.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #32,609 | #36,838 | -12.97% |
| Count | 664 | 606 | -8.73% |
| Proportion per 100k | 0.25 | 0.21 | -16% |
Race and Ethnicity of people with the last name Koslow
When examining the ethnic identity associated with the surname Koslow, again using data from the Decennial U.S. Census, we find that it is overwhelmingly associated with individuals identifying as White. In both 2000 and 2010, over 96% of those bearing the surname Koslow identified as White, with a slight increase of 0.49% over the decade. There was also a noticeable increase in those identifying as Hispanic, rising from 2.26% in 2000 to 2.97% in 2010 – an increase of 31.42%. However, no individuals with the surname Koslow identified as Asian/Pacific Islander, Black, or American Indian and Alaskan Native during these census years.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 96.23% | 96.7% | 0.49% |
| Hispanic | 2.26% | 2.97% | 31.42% |
| 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% |