Explore the Family Name Koscielniak

The meaning of Koscielniak

Polish (Kościelniak): patronymic from the occupational name kościelny ‘sacristan, churchwarden’. Some characteristic forenames: Polish Dariusz, Janusz, Jozefa, Kazimierz, Tadeusz, Waclaw, Wlodzimierz, Zbigniew.

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

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

According to the Decennial U.S. Census, the popularity of the surname Koscielniak has seen a slight decrease between 2000 and 2010. The rank of the surname dropped from 40,019 in 2000 to 42,640 in 2010, indicating a 6.55% decline. In terms of count, there was a minor decrease as well, with the total number of individuals bearing the surname Koscielniak dropping from 516 in 2000 to 508 in 2010 which is a 1.55% decrease. Accordingly, the proportion of people with this surname per 100k also fell by 10.53%, from 0.19 in 2000 to 0.17 in 2010.

	2000	2010	Change
Rank	#40,019	#42,640	-6.55%
Count	516	508	-1.55%
Proportion per 100k	0.19	0.17	-10.53%

Race and Ethnicity of people with the last name Koscielniak

The Decennial U.S. Census data reveals interesting shifts in the ethnic identity associated with the Koscielniak surname from 2000 to 2010. In 2000, the majority identified as White (97.09%) and this figure increased slightly to 98.23% in 2010. Meanwhile, those identifying with two or more races saw a decrease from 1.36% in 2000 to 0.98% in 2010. There was a notable change in the Hispanic category as it went from 1.16% in 2000 down to zero in 2010. The Asian/Pacific Islander, Black, and American Indian and Alaskan Native categories remained static at zero during both census periods.

	2000	2010	Change
White	97.09%	98.23%	1.17%
Two or More Races	1.36%	0.98%	-27.94%
Asian/Pacific Islander	0%	0%	0%
Hispanic	1.16%	0%	0%
Black	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%