How Many People Are Named Kei Smith?
There are approximately 6 people named Kei Smith living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 57,125,723 Americans.
This estimate combines SSA birth records for the first name Kei with Census Bureau frequency data for the surname Smith. 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
6
1 in 57,125,723 Americans
Combination Rarity
Very Rare
First Name
View full profileKei
Last Name
View full profileSmith
Kei: Popularity Over Time
Year-by-year SSA birth registrations for the first name Kei. The peak year was 2015 with 40 births. The average person named Kei today is 21 years old.
Ancestry of the First Name Kei
In the 2020 Census, the first name Kei was most commonly recorded among people who identified as Asian and Pacific Islander (66.56%). The next largest recorded groups were Black (10.37%) and White (9.34%).
These percentages describe the people who had the first name Kei 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 Kei rose or fell over time.
Ancestry of the Smith Surname
The surname Smith 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 Smith 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 "Kei" 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 "Smith" appears at a rate of 792.79 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 Kei are likely to be alive now.
Multiplying these frequencies against the U.S. population of ~343 million gives 6 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Kei
Other people with the surname Smith
Kei Smith: Questions and Answers
How many people are named Kei Smith?
We estimate approximately 6 people named Kei Smith are alive in the United States today. The first name Kei is shared by 794 Americans, and the surname Smith is shared by 2,717,332.
How rare is the name Kei Smith?
This name combination is classified as Very Rare, occurring at a rate of about 1 in 57,125,723 Americans. The first name Kei is very rare and the surname Smith is very common.
Is Kei a male or female name?
Kei is predominantly male, with 77.4% of bearers being male and 22.6% female. It peaked in popularity in 2015 and the average bearer today is 21 years old.
What does the Census say about the first name Kei?
In the 2020 Census, the first name Kei was most commonly recorded among people who identified as Asian and Pacific Islander (66.56%). The next largest recorded groups were Black (10.37%) and White (9.34%). 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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