Explore the Family Name Koos
The meaning of Koos
1. German: habitational name from Koos in Pomerania. 2. Dutch: probably a nickname for a flatterer or persuasive talker, from Middle Dutch cose ‘flattery’, a noun derivative of cosen ‘to fondle or caress, to smooth talk’. 3. Hungarian (Koós): variant of Kós (see Kos). Some characteristic forenames: Hungarian Laszlo, Bela, Istvan, Sandor, Tibor.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Koos in the United States?
According to the Decennial U.S. Census data, the surname Koos holds a unique position in terms of its popularity across the United States. In 2000, this surname was ranked at 25,466 and by 2010, it had slightly slipped to 26,362 reflecting a decline of 3.52%. Despite the slight drop in ranking, the census observed an increase in the count of individuals with the surname Koos, from 912 in 2000 to 926 in 2010, marking a 1.54% growth. However, the proportion per 100k people has decreased by 8.82%, indicating that while the count increased, it did not keep pace with the overall population growth.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #25,466 | #26,362 | -3.52% |
| Count | 912 | 926 | 1.54% |
| Proportion per 100k | 0.34 | 0.31 | -8.82% |
Race and Ethnicity of people with the last name Koos
In regards to ethnic identity, the Decennial U.S. Census data reveals some interesting shifts over the decade. In 2000, there were no reported individuals with the surname Koos identifying as Asian/Pacific Islander, but by 2010, that figure rose to 0.97%. The category of "Two or more races" saw a significant jump of 121.21%, increasing from 1.32% in 2000 to 2.92% in 2010. The majority of individuals with the surname Koos identified as White, although their percentage decreased slightly from 96.05% in 2000 to 93.63% in 2010. Individuals identifying as Hispanic saw a modest increase from 1.32% to 1.51%. Meanwhile, those identifying as American Indian and Alaskan Native in 2000 (0.66%) dropped to none by 2010. There were no individuals identified as Black in either year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 96.05% | 93.63% | -2.52% |
| Two or More Races | 1.32% | 2.92% | 121.21% |
| Hispanic | 1.32% | 1.51% | 14.39% |
| Asian/Pacific Islander | 0% | 0.97% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0.66% | 0% | 0% |