Explore the Family Name Casillo

The meaning of Casillo

Italian (southern): topographic name from medieval Latin casellum ‘hamlet, farmhouse’, or a habitational name from a place called Casillo in Campania. Some characteristic forenames: Italian Angelo, Sal, Alessandro, Aniello, Cataldo, Gaetano, Nunzio, Pasquale, Salvatore, Santo.

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

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

According to the Decennial U.S. Census, the popularity of the surname Casillo has seen a slight decrease between 2000 and 2010. In 2000, Casillo ranked 33,605 in popularity with a count of 640 individuals bearing the name. By 2010, the rank had increased to 35,812 and the count decreased slightly to 627. This represents a decline in the proportion of people with the surname per 100,000 from 0.24 in 2000 to 0.21 in 2010, marking a change of -12.5%.

	2000	2010	Change
Rank	#33,605	#35,812	-6.57%
Count	640	627	-2.03%
Proportion per 100k	0.24	0.21	-12.5%

Race and Ethnicity of people with the last name Casillo

In terms of ethnic identity, the Decennial U.S. Census reveals that most individuals with the Casillo surname identified as White, although this percentage decreased from 85.16% in 2000 to 82.14% in 2010. Over the same period, the percentage of people identifying as Hispanic increased from 12.66% to 14.51%. There was also a small increase in those identifying with two or more races, up from 1.09% in 2000 to 1.44% in 2010. A new development in 2010 was a small percentage (0.96%) of individuals identifying as Black, which had not been the case in 2000. The data for Asian/Pacific Islander and American Indian and Alaskan Native identities was either zero or suppressed for privacy reasons.

	2000	2010	Change
White	85.16%	82.14%	-3.55%
Hispanic	12.66%	14.51%	14.61%
Two or More Races	1.09%	1.44%	32.11%
Black	0%	0.96%	0%
Asian/Pacific Islander	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%