Explore the Family Name Rillo

The meaning of Rillo

1. Italian: possibly from a variant of the masculine form of Rella, or from a short form of the personal names Ferillo or Perillo. 2. Spanish: habitational name from a place called Rillo in Teruel province. This surname is most common in the Philippines.

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

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

Based on the Decennial U.S. Census data, the surname Rillo experienced slight fluctuations in popularity between 2000 and 2010. The rank of the name dropped marginally by 2.56% from 52,827 in 2000 to 54,178 in 2010. However, the count of people bearing the surname increased by 3.53%, from 368 in 2000 to 381 in 2010. Despite this increase, the proportion per 100,000 people decreased by 7.14%, indicating that while the absolute number of people with the Rillo surname increased, its relative popularity decreased.

	2000	2010	Change
Rank	#52,827	#54,178	-2.56%
Count	368	381	3.53%
Proportion per 100k	0.14	0.13	-7.14%

Race and Ethnicity of people with the last name Rillo

The ethnic identity associated with the surname Rillo also shifted slightly from 2000 to 2010, according to the Decennial U.S. Census data. The percentage of individuals identifying as Asian/Pacific Islander remained stable at 38.32%. Those identifying as two or more races saw a decline of 29.77%, dropping from 2.99% to 2.10%. Meanwhile, those identifying as White decreased by 2.34%, from 49.18% in 2000 to 48.03% in 2010. The Hispanic ethnicity saw an increase of 13.14%, rising from 9.51% to 10.76%. The Black and American Indian and Alaskan Native categories reported no changes, maintaining a 0% representation among individuals with the Rillo surname.

	2000	2010	Change
White	49.18%	48.03%	-2.34%
Asian/Pacific Islander	38.32%	38.32%	0%
Hispanic	9.51%	10.76%	13.14%
Two or More Races	2.99%	2.1%	-29.77%
Black	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%