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.
- #5,083 of 45,481
- all-time among boys
- 1,018
- born since 1907
- 1920s
- peak 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.
- #5,083 of 45,481 all-time among boys
- 1,018 born since 1907
- 1920s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Masao ranks #5,083 of 45,481 boys' names by all-time recorded births (highest first). 1,018 born since 1907, peaking in the 1920s.
- #5,083 of 45,481
- all-time among boys
- 1,018
- born since 1907
- 1920s
- peak decade
Masao's 1,018 recorded births place it above 88.82% of the 45,481 boys names in the full SSA archive.
The state file records this name in 4 jurisdictions, led by Hawaii.
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 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
1920s is the heaviest window (453 births, 44% of the file).
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 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% |
519 of 1,018 births nationwide. Compared to a flat distribution across 4 reporting states.
Frequently Asked Questions
How popular is the name Masao? ▼
Where does Masao sit in the SSA name archive? ▼
When was Masao most popular? ▼
Where is Masao most popular? ▼
How long has the name Masao been used? ▼
What names are similar to Masao? ▼
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
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
Compare Masao side by side: Masao vs Mason Masao vs Massimo Masao vs Masen
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Masao: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1918)
Similar record span (~112 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 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).
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 August 2026.