Boys' name · since 1917
Masuo
Since 1917, U.S. Social Security records show 35 babies named Masuo, peaking in 1920. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 35
- total births
- 1917–1927
- years on record
- 1920s
- peak decade
- 83%
- born in that decade
Masuo is not among the current top-ranked boys names; 35 have been recorded since 1917.
Masuo has 35 recorded births among boys since 1917, per the U.S. Social Security Administration, though it falls outside today's most-used boys names, busiest in the 1920s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1917 to 1927.
- 35 total births
- 1917–1927 years on record
- 1920s peak decade
- 83% born in that decade
Data updated Jul 2026
Masuo's 35 recorded births place it above 45% of the 45,481 boys names in the full SSA archive.
The state file records this name in 1 jurisdictions, led by Hawaii.
Masuo's usage pattern, beyond the headline number
Splitting Masuo's full recorded timeline at 1921, 51% of its total births fall in the more recent half of the record versus 49% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1921, with just 5 recorded births -- worth weighing against the 1920 peak of 11 to see the full range of the name's swing in popularity.
Masuo popularity over time
Annual U.S. births registered with the Social Security Administration · 1917–1927
- Peak year (1920)
- 11
- Annual births at peak, across 11 years of records
Masuo by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Masuo's strongest decade.
29 babies received the name during that ten-year window, about 83% of all-time use.
Masuo births by decade
Total births in each ten-year window
- 1910s 6
1910s
6 births
- 1920s
1920s
29 births
What this shows Peak: 1920s at 29 births (83% of all-time use).
Masuo by state
Where Masuo concentrates geographically, total births since 1917
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Hawaii | | 13 | 37.1% |
13 of 35 births nationwide.
Frequently Asked Questions
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What to do with Masuo's data
- Hawaii records the most Masuos (13 births) -- see the full state breakdown if geography matters to your decision. Hawaii 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 Masuo
Nearby Names Like Masuo
Names with a similar sound, spelling, or feel to Masuo
Compare Masuo side by side: Masuo vs Mason Masuo vs Massimo Masuo vs Masen
Related Names
Names with a similar number of total births
Data Sources
Data as of July 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, 1917–1927 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac. "Masuo: Baby Name Since 1917 - 35 Births, Peak 1920." NameAlmanac. Accessed via https://namealmanac.com/name/masuo. 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 Masuo 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 July 2026.