Total births
182
Boys' name · since 1915
Mamoru
182 babies named Mamoru in U.S. Social Security records since 1915, with the highest year being 1924. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- 182
- total births
- 1915–1937
- years on record
- 1920s
- peak decade
- 64%
- born in that decade
Mamoru is not among the current top-ranked boys names; 182 have been recorded since 1915.
Social Security Administration records show Mamoru recorded 182 times among boys since 1915, though it doesn't currently rank among the most-used boys names, peaking in the 1920s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1915 to 1937.
- 182 total births
- 1915–1937 years on record
- 1920s peak decade
- 64% born in that decade
Data updated Jun 2026
The verdict
182 boys have been named Mamoru since 1915, peaking in the 1920s, last recorded in 1937.
- 182
- total births
- 1915–1937
- years on record
- 1920s
- peak decade
- 64%
- born in that decade
1920s
Peak decade
64% of everyone ever named Mamoru was born in this single decade.
1924
Single peak year
16 babies were named Mamoru in 1924 - its busiest year on record.
Mamoru's usage pattern, beyond the headline number
Mamoru splits its recorded history at 1924: 55% of all births land in the more recent half, 45% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1915 (5 births) -- compare that against the 1924 peak of 16 for a sense of just how much the name's popularity has swung.
Mamoru at a glance
Last recorded 1937Peak year
1924
Current rank
Unranked
Active since
1915
Mamoru popularity over time
Annual U.S. births registered with the Social Security Administration · 1915–1937
- Peak year (1924)
- 16
- Annual births at peak, across 23 years of records
Mamoru by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Mamoru's strongest decade.
116 babies received the name during that ten-year window, about 64% of all-time use.
Mamoru births by decade
Total births in each ten-year window
- 1910s 39
1910s
39 births
- 1920s
1920s
116 births
- 1930s 27
1930s
27 births
What this shows Peak: 1920s at 116 births (64% of all-time use).
Mamoru by state
Where Mamoru concentrates geographically, total births since 1915
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Hawaii | | 106 | 58.2% |
| #2 | California | | 10 | 5.5% |
Hawaii share of Mamoru's total US births 58.2%
Even split
106 of 182 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Mamoru? ▼
Since 1915, Social Security records show 182 babies named Mamoru. The most recent recorded year was 1937. Its busiest year on record was 1924, with 16 births.
When was Mamoru most popular? ▼
Mamoru was most popular in the 1920s decade with 116 total births. The single peak year was 1924.
Where is Mamoru most popular? ▼
The top states for the name Mamoru are Hawaii (106 births), California (10 births).
How long has the name Mamoru been used? ▼
Records for Mamoru go back to 1915, giving 23 years of history through 1937.
What names are similar to Mamoru? ▼
Names with a similar sound or spelling include Mamadou, Mamie, Mamoudou, Mamady, and 4 more. These share a common prefix and are also used for boys.
What to do with Mamoru's data
- Mamoru's decade-level peak was the 1920s (116 total births); usage has since declined to 27 in the 1930s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Hawaii records the most Mamorus (106 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 Mamoru
Nearby Names Like Mamoru
Names with a similar sound, spelling, or feel to Mamoru
Mamadou Boy
#1613 1,924 births
Mamie Boy
278 births
Mamoudou Boy
#8627 104 births
Mamady Boy
#13062 65 births
Mamadi Boy
#9441 33 births
Compare Mamoru side by side: Mamoru vs Mamadou Mamoru vs Mamie Mamoru vs Mamoudou
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, 1915–1937 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Mamoru: Baby Name Since 1915 - 182 Births, Peak 1924." NameAlmanac. Accessed via https://namealmanac.com/name/mamoru. 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 Mamoru 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.