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.
- #13,545 of 45,481
- all-time among boys
- 182
- born since 1915
- 1920s
- peak 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.
- #13,545 of 45,481 all-time among boys
- 182 born since 1915
- 1920s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Mamoru ranks #13,545 of 45,481 boys' names by all-time recorded births (highest first). 182 born since 1915, peaking in the 1920s.
- #13,545 of 45,481
- all-time among boys
- 182
- born since 1915
- 1920s
- peak decade
Mamoru's 182 recorded births place it above 70.19% of the 45,481 boys names in the full SSA archive.
The state file records this name in 2 jurisdictions, led by Hawaii.
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 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
1920s is the heaviest window (116 births, 64% of the file).
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% |
106 of 182 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
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Where does Mamoru sit in the SSA name archive? ▼
When was Mamoru most popular? ▼
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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
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
Compare Mamoru side by side: Mamoru vs Mamadou Mamoru vs Mamie Mamoru vs Mamoudou
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Mamoru: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1924)
Similar record span (~22 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, 1915–1937 (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 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 August 2026.