Explore the Family Name Riascos

The meaning of Riascos

Hispanic (mainly Colombia): probably the plural form of a habitational name from Riasco in Lugo province, Galicia (Spain). Alternatively, perhaps an altered form of a habitational name from Reascos, also in Lugo province, Galicia.

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

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

The surname Riascos has seen a significant increase in popularity according to the Decennial U.S. Census data. In 2000, it was ranked as the 73,154th most common surname with a count of 247 people bearing it. However, this changed by 2010 as its rank improved to 51,396 and the count increased by an impressive 63.97%, bringing the number of people with the surname Riascos to 405. The proportion per 100,000 people also saw a growth of 55.56%, moving from 0.09 in 2000 to 0.14 in 2010.

	2000	2010	Change
Rank	#73,154	#51,396	29.74%
Count	247	405	63.97%
Proportion per 100k	0.09	0.14	55.56%

Race and Ethnicity of people with the last name Riascos

The Decennial U.S. Census data on ethnicity shows interesting trends for the surname Riascos. There were no identified Asian/Pacific Islander or individuals of two or more races with this surname in either 2000 or 2010. The percentage of people identifying as White with this surname nearly doubled from 2.83% in 2000 to 5.43% in 2010. However, the majority of individuals with the surname Riascos identified themselves as Hispanic, comprising 81.78% in 2000 and 81.73% in 2010. A slight decrease was seen among those identifying as Black, going from 13.77% in 2000 to 12.10% in 2010. No individuals with the surname Riascos identified themselves as American Indian and Alaskan Native in either year.

	2000	2010	Change
Hispanic	81.78%	81.73%	-0.06%
Black	13.77%	12.1%	-12.13%
White	2.83%	5.43%	91.87%
Asian/Pacific Islander	0%	0%	0%
Two or More Races	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%