How Common Is the Surname Castillo?
The surname Castillo is the #93 most common last name in the United States, with an estimated 262,366 bearers. That's about 1 in 1,280 Americans. This data comes from the 2010 U.S. Census Bureau surname frequency tables.
This page covers the Castillo surname's frequency in the U.S. population, its rank among all American surnames, and a breakdown of ancestry and ethnicity data from the Census. You can also check how many people share any first + last name combination involving Castillo.
Estimated Americans with this Surname
262,366
About 1 in 1,280 people in the U.S.
Census Rank
#93
Frequency Rate
78.11
per 100,000 people
Census Count
230,420
2010 Census
Data Source
2010
U.S. Census Bureau
Ancestry and Ethnicity for Castillo
The Castillo surname is most commonly associated with people who identify as Hispanic (90.26%). The next largest groups are White (4.92%) and Asian/Pacific Islander (3.04%).
Self-reported race and ethnicity from the 2010 U.S. Census Bureau surname tables. Some categories may be suppressed for privacy when sample sizes are small.
How Many People Are Named ... Castillo?
Pair the Castillo surname with a first name to estimate how many people share that full name in the United States.
Castillo Surname: Questions and Answers
How common is the last name Castillo?
Castillo is the #93 most common surname in the United States, with an estimated 262,366 people sharing this last name. It appears at a rate of 78.11 per 100,000 Americans.
What ethnicity is the surname Castillo?
The Castillo surname is most commonly associated with people who identify as Hispanic (90.26%). The next largest groups are White (4.92%) and Asian/Pacific Islander (3.04%). This data comes from the 2010 U.S. Census Bureau surname tables, which include self-reported race and ethnicity breakdowns.
How many people named [First Name] Castillo are there?
We can estimate any first + last name combination. Popular examples: Michael Castillo, James Castillo, John Castillo. Search any combination on our homepage.
Where does this surname data come from?
Surname frequency data comes from the 2010 U.S. Census Bureau decennial surname tables. These list every surname appearing in the Census along with frequency rates and demographic breakdowns. Full methodology.
Search for a full name combination
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