Boys' name · since 1915
Tatsuo
222 babies named Tatsuo in U.S. Social Security records since 1915, with the highest year being 1916. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #12,341 of 45,481
- all-time among boys
- 222
- born since 1915
- 1920s
- peak decade
Tatsuo is not among the current top-ranked boys names; 222 have been recorded since 1915.
Social Security Administration records show Tatsuo recorded 222 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 1940.
- #12,341 of 45,481 all-time among boys
- 222 born since 1915
- 1920s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Tatsuo ranks #12,341 of 45,481 boys' names by all-time recorded births (highest first). 222 born since 1915, peaking in the 1920s.
- #12,341 of 45,481
- all-time among boys
- 222
- born since 1915
- 1920s
- peak decade
Tatsuo's 222 recorded births place it above 72.86% of the 45,481 boys names in the full SSA archive.
The state file records this name in 2 jurisdictions, led by Hawaii.
Tatsuo's usage pattern, beyond the headline number
Splitting Tatsuo's full recorded timeline at 1923, 45% of its total births fall in the more recent half of the record versus 55% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1915, with just 6 recorded births -- worth weighing against the 1916 peak of 57 to see the full range of the name's swing in popularity.
Tatsuo popularity over time
Annual U.S. births registered with the Social Security Administration · 1915–1940
- Peak year (1916)
- 57
- Annual births at peak, across 26 years of records
Tatsuo by decade
1920s is the heaviest window (112 births, 50% of the file).
1920s was Tatsuo's strongest decade.
112 babies received the name during that ten-year window, about 50% of all-time use.
Tatsuo births by decade
Total births in each ten-year window
- 1910s
1910s
97 births
- 1920s
1920s
112 births
- 1930s 7
1930s
7 births
- 1940s 6
1940s
6 births
What this shows Peak: 1920s at 112 births (50% of all-time use).
Tatsuo by state
Where Tatsuo concentrates geographically, total births since 1915
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Hawaii | | 111 | 50.0% |
| #2 | California | | 36 | 16.2% |
111 of 222 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
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What to do with Tatsuo's data
- Tatsuo's decade-level peak was the 1920s (112 total births); usage has since declined to 6 in the 1940s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Hawaii records the most Tatsuos (111 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 Tatsuo
Nearby Names Like Tatsuo
Names with a similar sound, spelling, or feel to Tatsuo
Compare Tatsuo side by side: Tatsuo vs Tate Tatsuo vs Tatum Tatsuo vs Taten
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Tatsuo: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1916)
Similar record span (~25 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, 1915–1940 (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 Tatsuo 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.