How Many People Are Named Luis Castillo?
There are approximately 213 people named Luis Castillo living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 1,609,175 Americans.
This estimate combines SSA birth records for the first name Luis with Census Bureau frequency data for the surname Castillo. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
213
1 in 1,609,175 Americans
Combination Rarity
Uncommon
First Name
View full profileLuis
Last Name
View full profileCastillo
Luis: Popularity Over Time
Year-by-year SSA birth registrations for the first name Luis. The peak year was 2007 with 8,066 births. The average person named Luis today is 31 years old.
Ancestry of the Castillo Surname
Self-reported race and ethnicity breakdown for people with the surname Castillo, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Luis" has an estimated frequency of 0.0795% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Castillo" appears at a rate of 78.11 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 213 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Luis
Luis Castillo: Questions and Answers
How many people are named Luis Castillo?
We estimate approximately 213 people named Luis Castillo are alive in the United States today. The first name Luis is shared by 272,444 Americans, and the surname Castillo is shared by 262,366.
How rare is the name Luis Castillo?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 1,609,175 Americans. The first name Luis is common and the surname Castillo is common.
Is Luis a male or female name?
Luis is predominantly male, with 99.5% of bearers being male and 0.5% female. It peaked in popularity in 2007 and the average bearer today is 31 years old.
Where does this data come from?
First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. Surname data comes from the 2010 U.S. Census Bureau. Full methodology.
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