How Many People Are Named Isamu?
An estimated 68 people in the United States have the first name Isamu. It is almost exclusively a male name. The average bearer is 45 years old, and Isamu peaked in popularity in 1922 with 40 births that year.
Below you will find a full statistical profile of Isamu 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 Isamu paired with any surname.
Key Insights
- Isamu is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
68
About 1 in 5,040,505 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
45
years old
Peak Year
1922
40 births
Total Registered
562
since 1880
Gender Distribution for Isamu
Isamu is almost exclusively a male name. Out of 562 total births registered, 100.0% were male.
Isamu as a male name
Ranked #11,363 in 2023
6 male births in 2023
Peak: 1922 (40 births)
Isamu: Popularity Over Time
SSA records for Isamu span from the 1910s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 1920s, when 295 babies were registered. Isamu has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Isamu by Decade
How has Isamu 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.
Isamu by State
Isamu + Last Name Combinations
How many people share a full name with Isamu as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Isamu
Other first names starting with I with a similar number of bearers.
Isamu: Questions and Answers
How many people in the U.S. are named Isamu?
We estimate approximately 68 people named Isamu 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 5,040,505 Americans share this first name.
Is Isamu a common name?
Isamu is classified as "Very Rare" and is more popular than 58.9% of all first names in the SSA database. A total of 562 births have been registered with this name since 1880.
When was Isamu most popular?
Isamu reached peak popularity in 1922, when 40 babies were given this name. The average age of a living person named Isamu is approximately 45 years old, reflecting when the name was most commonly given.
Is Isamu a male name?
Isamu is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Isamu Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Isamu Smith, Isamu Johnson, Isamu 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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