Explore the Family Name Koser

The meaning of Koser

1. South German: from an agent derivative of Middle High German kōsen ‘to talk or discuss’; later ‘to chat up, to caress’; possibly a nickname for a talker but more likely for a smooth-talker, a lady’s man. 2. Slovenian and Croatian: from archaic koser ‘curved knife’, thus a metonymic occupational name for a maker or user of such knives. This surname is very rare in Croatia.

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name Koser in the United States?

Based on the data from the Decennial U.S. Census, the surname Koser saw a decline in popularity between 2000 and 2010. In 2000, the surname was ranked 18,883 but rose to 20,792 by 2010, showing a decrease in rank by 10.11%. The actual count of individuals with this last name also dropped during this decade, from 1,338 in 2000 to 1,270 in 2010, which is a 5.08% decrease. Similarly, the proportion of people with the Koser surname per 100k decreased by 14.0%, going from 0.5 in 2000 to 0.43 in 2010.

	2000	2010	Change
Rank	#18,883	#20,792	-10.11%
Count	1,338	1,270	-5.08%
Proportion per 100k	0.5	0.43	-14%

Race and Ethnicity of people with the last name Koser

The ethnicity breakdown of the surname Koser reveals changes over the ten-year period from 2000 to 2010, according to the Decennial U.S. Census. The percentage of those identifying as White reduced slightly from 97.83% to 95.67%, a change of -2.21%. However, there was an increase in the percentages of people with the Koser surname who identified as Hispanic (from 1.20% to 1.57%), Two or more races (from 0.45% to 0.79%) and newly reported ethnic identities such as Asian/Pacific Islander, Black, and American Indian and Alaskan Native, although these figures were quite small.

	2000	2010	Change
White	97.83%	95.67%	-2.21%
Hispanic	1.2%	1.57%	30.83%
Asian/Pacific Islander	0%	0.79%	0%
Two or More Races	0.45%	0.79%	75.56%
Black	0%	0.71%	0%
American Indian and Alaskan Native	0%	0.47%	0%