How Many People Are Named Susumu?
An estimated 23 people in the United States have the first name Susumu. It is almost exclusively a male name. The average bearer is 92 years old, and Susumu peaked in popularity in 1919 with 27 births that year.
Below you will find a full statistical profile of Susumu as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, state-by-state birth registrations, and, when available, a 2020 Census snapshot showing who had the name at that point in time. You can also check how many people share the full name Susumu paired with any surname.
Key Insights
- With an average bearer age of 92, Susumu is a vintage name most associated with earlier generations. Most living bearers were born before 1944.
- Susumu is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
23
About 1 in 14,902,363 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
92
years old
Peak Year
1919
27 births
Total Registered
351
since 1880
Gender Distribution for Susumu
Susumu is almost exclusively a male name. Out of 351 total births registered, 100.0% were male.
Susumu as a male name
Ranked #3,203 in 1943
7 male births in 1943
Peak: 1919 (27 births)
Susumu in the 2020 Census
The 2020 Census recorded 259 people with the first name Susumu, which placed it at #32,469 in the published first-name tables. This is a snapshot of people who already had the name in 2020. The estimated living count elsewhere on this page is different: it is a current estimate built from SSA birth records and age-based survival rates, so the two figures are not expected to match exactly.
Read this section as a snapshot of people who already had the name in 2020. The SSA charts elsewhere on this page are still the better way to see how the name rose, fell, or shifted across generations.
Gender in the 2020 Census
In the 2020 Census, Susumu was recorded as predominantly male. Out of 259 people with this name in that snapshot, 99.6% were male and 0.4% were female. That is very close to the long-run birth pattern in SSA records, where the name is male 100.0% of the time.
Census Count
259
people with this name
Census Rank
#32,469
among Census first names
Frequency Rate
0.09
per 100,000 people
Recorded Race and Hispanic Origin in the 2020 Census
In the 2020 Census, the first name Susumu was most commonly recorded among people who identified as Asian and Pacific Islander (95.72%). The next largest recorded groups were Two or More Races (2.72%) and White (1.17%).
These percentages describe the people who had the first name Susumu in the 2020 Census. They do not tell you the deeper meaning or origin of the name itself.
2020 Census demographic breakdown
Each row shows a recorded Census category for people with the first name Susumu.
| Group | Share | Count |
|---|---|---|
| Asian and Pacific Islander | 95.72% | 246 |
| Two or More Races | 2.72% | 7 |
| White | 1.17% | 3 |
| American Indian and Alaska Native | 0.39% | 1 |
The Census published separate sex and race/origin tables for first names, so their total counts can differ slightly for the same name. That is why the race section focuses on the demographic mix rather than repeating a second headline count.
Susumu: Popularity Over Time
SSA records for Susumu span from the 1910s to the 1940s, covering 4 decades of naming data. The most popular decade for this name was the 1920s, when 201 babies were registered. Susumu has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Susumu by Decade
How has Susumu 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.
Susumu by State
Susumu + Last Name Combinations
How many people share a full name with Susumu as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Susumu
Other first names starting with S with a similar number of bearers.
Susumu: Questions and Answers
How many people in the U.S. are named Susumu?
We estimate approximately 23 people named Susumu 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 14,902,363 Americans share this first name.
Is Susumu a common name?
Susumu is classified as "Very Rare" and is more popular than 42.3% of all first names in the SSA database. A total of 351 births have been registered with this name since 1880.
When was Susumu most popular?
Susumu reached peak popularity in 1919, when 27 babies were given this name. The average age of a living person named Susumu is approximately 92 years old, reflecting when the name was most commonly given.
How common was Susumu in the 2020 Census?
The 2020 Census recorded 259 people with the first name Susumu. That placed it at #32,469 in the published Census first-name tables, or 0.09 people per 100,000.
Why is the Census count different from the living estimate?
Because they measure different things. The Census number is a count of people with the name in 2020. The living estimate is a current model based on SSA birth records and survival rates, so it aims to estimate how many people with the name are alive now.
What does the SSA popularity chart show?
The popularity chart tracks birth registrations, not people currently alive. It shows how often Susumu was given to babies from 1880 through 2024, which is why it is the best tool on the page for seeing long-run naming trends.
What does the Census say about the gender split for Susumu?
In the 2020 Census snapshot, Susumu was recorded as predominantly male. The published split was 99.6% male and 0.4% female.
What does the Census say about the background of people named Susumu?
In the 2020 Census, the first name Susumu was most commonly recorded among people who identified as Asian and Pacific Islander (95.72%). The next largest recorded groups were Two or More Races (2.72%) and White (1.17%). These percentages describe the people who had the name in the 2020 Census, not the deeper meaning or origin of the name itself.
Why can the Census sex total and race total differ slightly?
The Census published separate first-name tables for sex and for race and Hispanic origin. Those totals can differ slightly for the same name, so the page uses them as two related snapshots rather than treating them as perfectly interchangeable counts.
Does every first name have Census demographic data?
No. The public Census first-name tables only include names that met the Bureau's publication rules. That means some names on this site will have SSA history but no published Census demographic snapshot.
Is Susumu a male name?
Susumu is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
Why can Susumu have a lot of living bearers even if it is not trendy now?
Because a name can build up a large population over many decades. Susumu peaked in 1919, and the average living bearer is about 92 years old, so a name can still have millions of living bearers even after it stops feeling current for newborns.
How many Susumu Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Susumu Smith, Susumu Johnson, Susumu 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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