How Many People Are Named Sebastien Brown?
There are approximately 19 people named Sebastien Brown living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 18,039,702 Americans.
This estimate combines SSA birth records for the first name Sebastien with Census Bureau frequency data for the surname Brown. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
19
1 in 18,039,702 Americans
Combination Rarity
Rare
First Name
View full profileSebastien
Last Name
View full profileBrown
Sebastien: Popularity Over Time
Year-by-year SSA birth registrations for the first name Sebastien. The peak year was 2007 with 178 births. The average person named Sebastien today is 19 years old.
Ancestry of the Brown Surname
Self-reported race and ethnicity breakdown for people with the surname Brown, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Sebastien" has an estimated frequency of < 0.0001% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Brown" appears at a rate of 487.16 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 19 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Sebastien
Other people with the surname Brown
Sebastien Brown: Questions and Answers
How many people are named Sebastien Brown?
We estimate approximately 19 people named Sebastien Brown are alive in the United States today. The first name Sebastien is shared by 3,944 Americans, and the surname Brown is shared by 1,636,337.
How rare is the name Sebastien Brown?
This name combination is classified as Rare, occurring at a rate of about 1 in 18,039,702 Americans. The first name Sebastien is rare and the surname Brown is very common.
Is Sebastien a male or female name?
Sebastien is predominantly male, with 100.0% of bearers being male and 0.0% female. It peaked in popularity in 2007 and the average bearer today is 19 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.
Try another name
How Many of Me