How Many People Are Named Sebastian King?
There are approximately 310 people named Sebastian King living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 1,105,659 Americans.
This estimate combines SSA birth records for the first name Sebastian with Census Bureau frequency data for the surname King. Below you will find a breakdown of both names, including popularity trends, gender data, and Census background data where it is available.
Estimated People with This Name
310
1 in 1,105,659 Americans
Combination Rarity
Uncommon
First Name
View full profileSebastian
Last Name
View full profileKing
Sebastian: Popularity Over Time
Year-by-year SSA birth registrations for the first name Sebastian. The peak year was 2016 with 10,324 births. The average person named Sebastian today is 15 years old.
Ancestry of the First Name Sebastian
In the 2020 Census, the first name Sebastian was most commonly recorded among people who identified as Hispanic (64.81%). The next largest recorded groups were White (26.44%) and Two or More Races (3.33%).
These percentages describe the people who had the first name Sebastian in the 2020 Census. They do not tell you the deeper origin or meaning of the name itself.
Read this as a snapshot of who already had the name in 2020, not as a trend line. The SSA chart above is still the better way to see how Sebastian rose or fell over time.
Ancestry of the King Surname
The surname King was most commonly recorded among people who identified as White in the 2020 Census.
This is a self-reported race and ethnicity breakdown for people who had the surname King in the published Census surname tables. It gives useful context around who was recorded with the name, but it does not tell the full family history of every Boone line.
How we calculated this
The first name "Sebastian" has an estimated frequency of 0.0596% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "King" appears at a rate of 151.74 per 100,000 people in the 2020 U.S. Census.
We do not use the Census first-name snapshot for the main estimate because it is only published once every 10 years. The latest public first-name Census file is from 2020, which is already 6 years old. SSA birth records plus CDC survival data give a better current estimate of how many people with the first name Sebastian are likely to be alive now.
Multiplying these frequencies against the U.S. population of ~343 million gives 310 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Sebastian
Other people with the surname King
Sebastian King: Questions and Answers
How many people are named Sebastian King?
We estimate approximately 310 people named Sebastian King are alive in the United States today. The first name Sebastian is shared by 204,231 Americans, and the surname King is shared by 520,085.
How rare is the name Sebastian King?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 1,105,659 Americans. The first name Sebastian is common and the surname King is very common.
Is Sebastian a male or female name?
Sebastian is predominantly male, with 99.8% of bearers being male and 0.2% female. It peaked in popularity in 2016 and the average bearer today is 15 years old.
What does the Census say about the first name Sebastian?
In the 2020 Census, the first name Sebastian was most commonly recorded among people who identified as Hispanic (64.81%). The next largest recorded groups were White (26.44%) and Two or More Races (3.33%). These percentages describe the people who had the name in the 2020 Census, not the deeper origin of the name itself.
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. When available, first-name Census background data comes from the 2020 U.S. Census Bureau first-name tables. Surname data comes from the 2020 U.S. Census Bureau. Full methodology.
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