How Many People Are Named Sekai?
An estimated 306 people in the United States have the first name Sekai. It is used for both genders, with 73.5% male. The average bearer is 11 years old, and Sekai peaked in popularity in 2023 with 47 births that year.
Below you will find a full statistical profile of Sekai as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Sekai paired with any surname.
Estimated Living Americans
306
About 1 in 1,120,112 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
73.5% confidence
Average Age
11
years old
Peak Year
2023
47 births
Total Registered
309
since 1880
Gender Distribution for Sekai
Sekai is a genuinely unisex name, used for both males (73.5%) and females (26.5%). Out of 309 total births registered, 227 were male and 82 were female.
Sekai as a male name
Ranked #3,311 in 2024
36 male births in 2024
Peak: 2023 (41 births)
Sekai as a female name
Ranked #14,880 in 2023
6 female births in 2023
Peak: 2006 (10 births)
Sekai: Popularity Over Time
SSA records for Sekai span from the 2000s to the 2020s, covering 3 decades of naming data. The most popular decade for this name was the 2020s, when 147 babies were registered. Sekai remains highly popular today, with recent registration numbers near its historical peak.
Sekai by Decade
How has Sekai tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Sekai + Last Name Combinations
How many people share a full name with Sekai as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Sekai
Other first names starting with S with a similar number of bearers.
Sekai: Questions and Answers
How many people in the U.S. are named Sekai?
We estimate approximately 306 people named Sekai are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 1,120,112 Americans share this first name.
Is Sekai a common name?
Sekai is classified as "Very Rare" and is more popular than 79.4% of all first names in the SSA database. A total of 309 births have been registered with this name since 1880.
When was Sekai most popular?
Sekai reached peak popularity in 2023, when 47 babies were given this name. The average age of a living person named Sekai is approximately 11 years old, reflecting when the name was most commonly given.
Is Sekai a male name?
Sekai is predominantly male. 73.5% of people with this name are male. See the gender breakdown above for full details.
How many Sekai Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Sekai Smith, Sekai Johnson, Sekai Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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