Total births
1,018
Boys' name · since 1907
Masao
Since 1907, U.S. Social Security records show 1,018 babies named Masao, peaking in 1918. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 1,018
- total births
- 1907–2019
- years on record
- 1920s
- peak decade
- 44%
- born in that decade
1,018 boys have been named Masao since 1907, though it isn't currently a top-ranked name.
According to the U.S. Social Security Administration, Masao has been recorded 1,018 times among boys since 1907, 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 1907 to 2019.
- 1,018 total births
- 1907–2019 years on record
- 1920s peak decade
- 44% born in that decade
Data updated Jun 2026
The verdict
1,018 boys have been named Masao since 1907, peaking in the 1920s, last recorded in 2019.
- 1,018
- total births
- 1907–2019
- years on record
- 1920s
- peak decade
- 44%
- born in that decade
1920s
Peak decade
44% of everyone ever named Masao was born in this single decade.
1918
Single peak year
81 babies were named Masao in 1918 - its busiest year on record.
Masao's usage pattern, beyond the headline number
Divide Masao's SSA record in two at 1927 and the more recent half accounts for 24% of all births, the earlier half the remaining 76%, consistent with a name more common in the past than in recent years. Its calmest year was 1907, with only 5 births recorded -- set against the 1918 peak of 81, that's the full swing in one name's fortunes.
Masao at a glance
Last recorded 2019Peak year
1918
Current rank
Unranked
Active since
1907
Masao popularity over time
Annual U.S. births registered with the Social Security Administration · 1907–2019
- Peak year (1918)
- 81
- Annual births at peak, across 113 years of records
Masao by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Masao's strongest decade.
453 babies received the name during that ten-year window, about 44% of all-time use.
Masao births by decade
Total births in each ten-year window
- 1900s 10
1900s
10 births
- 1910s
1910s
400 births
- 1920s
1920s
453 births
- 1930s 114
1930s
114 births
- 1940s 11
1940s
11 births
- 1960s 5
1960s
5 births
- 1980s 7
1980s
7 births
- 2010s 18
2010s
18 births
What this shows Peak: 1920s at 453 births (44% of all-time use).
How Masao compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Masao's total volume
Masao vs 15 similarly-sized boys names
Masao by state
Where Masao concentrates geographically, total births since 1907
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Hawaii | | 519 | 51.0% |
| #2 | California | | 323 | 31.7% |
| #3 | Washington | | 29 | 2.8% |
| #4 | Oregon | | 5 | 0.5% |
Hawaii share of Masao's total US births 51.0%
Even split
519 of 1,018 births nationwide. Compared to a flat distribution across 4 reporting states.
Frequently Asked Questions
How popular is the name Masao? ▼
Masao has been given to 1,018 babies in the U.S. since 1907, according to SSA data. Its last appearance in the data was 2019. 81 babies were born in 1918, its single highest year.
When was Masao most popular? ▼
Masao was most popular in the 1920s decade with 453 total births. The single peak year was 1918.
Where is Masao most popular? ▼
The top states for the name Masao are Hawaii (519 births), California (323 births), Washington (29 births).
How long has the name Masao been used? ▼
Masao has been recorded in Social Security data since 1907, spanning 113 years of data through 2019.
What names are similar to Masao? ▼
Names with a similar sound or spelling include Mason, Massimo, Masen, Masyn, and 4 more. These share a common prefix and are also used for boys.
What to do with Masao's data
- Masao's decade-level peak was the 1920s (453 total births); usage has since declined to 18 in the 2010s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Hawaii records the most Masaos (519 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 Masao
Nearby Names Like Masao
Names with a similar sound, spelling, or feel to Masao
Mason Boy
#42 342,583 births
Massimo Boy
#887 4,026 births
Masen Boy
#2816 3,243 births
Masyn Boy
#2467 1,501 births
Massiah Boy
#1954 1,451 births
Compare Masao side by side: Masao vs Mason Masao vs Massimo Masao vs Masen
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, 1907–2019 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Masao: Baby Name Since 1907 - 1,018 Births, Peak 1918." NameAlmanac. Accessed via https://namealmanac.com/name/masao. 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 Masao 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.