How Many People Are Named Seikichi?
An estimated 1 people in the United States have the first name Seikichi. It is almost exclusively a male name. The average bearer is 82 years old, and Seikichi peaked in popularity in 1927 with 7 births that year.
Below you will find a full statistical profile of Seikichi 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 Seikichi paired with any surname.
Key Insights
- With an average bearer age of 82, Seikichi is a vintage name most associated with earlier generations. Most living bearers were born before 1954.
- Seikichi is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
1
About 1 in 342,754,338 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
82
years old
Peak Year
1927
7 births
Total Registered
28
since 1880
Gender Distribution for Seikichi
Seikichi is almost exclusively a male name. Out of 28 total births registered, 100.0% were male.
Seikichi as a male name
Ranked #4,642 in 1928
5 male births in 1928
Peak: 1927 (7 births)
Seikichi: Popularity Over Time
SSA records for Seikichi span from the 1910s to the 1920s, covering 2 decades of naming data. The most popular decade for this name was the 1920s, when 23 babies were registered. Seikichi remains highly popular today, with recent registration numbers near its historical peak.
Seikichi by Decade
How has Seikichi 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.
Seikichi by State
Seikichi + Last Name Combinations
How many people share a full name with Seikichi as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Seikichi
Other first names starting with S with a similar number of bearers.
Seikichi: Questions and Answers
How many people in the U.S. are named Seikichi?
We estimate approximately 1 people named Seikichi 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 342,754,338 Americans share this first name.
Is Seikichi a common name?
Seikichi is classified as "Very Rare" and is more popular than 3.8% of all first names in the SSA database. A total of 28 births have been registered with this name since 1880.
When was Seikichi most popular?
Seikichi reached peak popularity in 1927, when 7 babies were given this name. The average age of a living person named Seikichi is approximately 82 years old, reflecting when the name was most commonly given.
Is Seikichi a male name?
Seikichi is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Seikichi Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Seikichi Smith, Seikichi Johnson, Seikichi 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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