Total births
94
Boys' name · since 1920
Osamu
Since 1920, U.S. Social Security records show 94 babies named Osamu, peaking in 1925. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 94
- total births
- 1920–1997
- years on record
- 1920s
- peak decade
- 62%
- born in that decade
Osamu is not among the current top-ranked boys names; 94 have been recorded since 1920.
According to the U.S. Social Security Administration, Osamu has been recorded 94 times among boys since 1920, though it is not among the currently most-used boys names, with its heaviest use in the 1920s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1920 to 1997.
- 94 total births
- 1920–1997 years on record
- 1920s peak decade
- 62% born in that decade
Data updated Jun 2026
The verdict
94 boys have been named Osamu since 1920, peaking in the 1920s, last recorded in 1997.
- 94
- total births
- 1920–1997
- years on record
- 1920s
- peak decade
- 62%
- born in that decade
1920s
Peak decade
62% of everyone ever named Osamu was born in this single decade.
1925
Single peak year
11 babies were named Osamu in 1925 - its busiest year on record.
Osamu's usage pattern, beyond the headline number
Osamu splits its recorded history at 1929: 45% of all births land in the more recent half, 55% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1920 (5 births) -- compare that against the 1925 peak of 11 for a sense of just how much the name's popularity has swung.
Osamu at a glance
Last recorded 1997Peak year
1925
Current rank
Unranked
Active since
1920
Osamu popularity over time
Annual U.S. births registered with the Social Security Administration · 1920–1997
- Peak year (1925)
- 11
- Annual births at peak, across 78 years of records
Osamu by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Osamu's strongest decade.
58 babies received the name during that ten-year window, about 62% of all-time use.
Osamu births by decade
Total births in each ten-year window
- 1920s
1920s
58 births
- 1930s 21
1930s
21 births
- 1970s 5
1970s
5 births
- 1980s 5
1980s
5 births
- 1990s 5
1990s
5 births
What this shows Peak: 1920s at 58 births (62% of all-time use).
Osamu by state
Where Osamu concentrates geographically, total births since 1920
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 18 | 19.1% |
| #2 | Hawaii | | 8 | 8.5% |
California share of Osamu's total US births 19.1%
Even split
18 of 94 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Osamu? ▼
Osamu has been given to 94 babies in the U.S. since 1920, according to SSA data. Its last appearance in the data was 1997. 11 babies were born in 1925, its single highest year.
When was Osamu most popular? ▼
Osamu was most popular in the 1920s decade with 58 total births. The single peak year was 1925.
Where is Osamu most popular? ▼
The top states for the name Osamu are California (18 births), Hawaii (8 births).
How long has the name Osamu been used? ▼
The SSA has tracked Osamu since 1920 -- 78 years through the most recent 1997 data.
What names are similar to Osamu? ▼
Names with a similar sound or spelling include Osama, Osaze, Osamah, Osa, and 4 more. These share a common prefix and are also used for boys.
What to do with Osamu's data
- Osamu's decade-level peak was the 1920s (58 total births); usage has since declined to 5 in the 1990s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Osamus (18 births) -- see the full state breakdown if geography matters to your decision. California names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Osamu
Nearby Names Like Osamu
Names with a similar sound, spelling, or feel to Osamu
Osama Boy
#6923 979 births
Osaze Boy
#10258 132 births
Osamah Boy
101 births
Osa Boy
87 births
Osagie Boy
36 births
Compare Osamu side by side: Osamu vs Osama Osamu vs Osaze Osamu vs Osamah
Related Names
Names with a similar number of total births
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1920–1997 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Osamu: Baby Name Since 1920 - 94 Births, Peak 1925." NameAlmanac. Accessed via https://namealmanac.com/name/osamu. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Osamu draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.