Explore the Family Name Janca

The meaning of Janca

1. Czech and Slovak (Janča): from a derivative of the personal name Jan. 2. Perhaps also an Americanized form of Hungarian Jancsa (a derivative of the personal name János; see Janos) and of Hungarian and Czech Janka.

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

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

According to data from the Decennial U.S. Census, the popularity of the surname "Janca" has seen a slight decrease between the years 2000 and 2010. In 2000, Janca was ranked as the 42,757th most common surname in the United States, but by 2010 it had dropped to the 48,160th position, representing a change of -12.64%. The count of individuals bearing this surname also decreased from 477 in 2000 to 439 in 2010, which is a decrease of approximately 7.97%. The proportion of people with this surname per 100,000 population also saw a decline of 16.67%, going from 0.18 in 2000 to 0.15 in 2010.

	2000	2010	Change
Rank	#42,757	#48,160	-12.64%
Count	477	439	-7.97%
Proportion per 100k	0.18	0.15	-16.67%

Race and Ethnicity of people with the last name Janca

Looking at the ethnic identity associated with the surname Janca, again based on data from the Decennial U.S. Census, there are some changes to note between 2000 and 2010. A majority of those with the Janca surname identified as White in both years, though there was a slight decrease from 98.32% in 2000 to 94.76% in 2010. The percentage of those identifying as Hispanic saw an increase from 1.26% to 2.96%. Interestingly, in 2010, a small percentage (1.14%) reported being of two or more ethnicities. Data for Asian/Pacific Islander, Black, and American Indian and Alaskan Native ethnicities were either zero or suppressed for privacy (S) in both years.

	2000	2010	Change
White	98.32%	94.76%	-3.62%
Hispanic	1.26%	2.96%	134.92%
Two or More Races	0%	1.14%	0%
Asian/Pacific Islander	0%	0%	0%
Black	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%