How Many People Are Named William Santos?
There are approximately 1,086 people named William Santos living in the United States today. That makes this name combination common, occurring at a rate of about 1 in 315,612 Americans.
This estimate combines SSA birth records for the first name William with Census Bureau frequency data for the surname Santos. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
1,086
1 in 315,612 Americans
Combination Rarity
Common
First Name
View full profileWilliam
Last Name
View full profileSantos
William: Popularity Over Time
Year-by-year SSA birth registrations for the first name William. The peak year was 1947 with 67,155 births. The average person named William today is 54 years old.
Ancestry of the Santos Surname
Self-reported race and ethnicity breakdown for people with the surname Santos, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "William" has an estimated frequency of 0.681% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Santos" appears at a rate of 46.52 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 1,086 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named William
Other people with the surname Santos
William Santos: Questions and Answers
How many people are named William Santos?
We estimate approximately 1,086 people named William Santos are alive in the United States today. The first name William is shared by 2,335,115 Americans, and the surname Santos is shared by 156,258.
How rare is the name William Santos?
This name combination is classified as Common, occurring at a rate of about 1 in 315,612 Americans. The first name William is very common and the surname Santos is common.
Is William a male or female name?
William is predominantly male, with 99.6% of bearers being male and 0.4% female. It peaked in popularity in 1947 and the average bearer today is 54 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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