Total births
40
Boys' name · since 1919
Seiichi
Seiichi has 40 recorded births since 1919 in federal Social Security data, most heavily in 1919 -- full year-by-year trend, decade aggregates, and state rankings follow.
- 40
- total births
- 1919–1926
- years on record
- 1920s
- peak decade
- 80%
- born in that decade
Seiichi sits outside today's top ranks for boys, with 40 recorded since 1919.
According to the U.S. Social Security Administration, Seiichi has been recorded 40 times among boys since 1919, 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 1919 to 1926.
- 40 total births
- 1919–1926 years on record
- 1920s peak decade
- 80% born in that decade
Data updated Jul 2026
The verdict
40 boys have been named Seiichi since 1919, peaking in the 1920s, last recorded in 1926.
- 40
- total births
- 1919–1926
- years on record
- 1920s
- peak decade
- 80%
- born in that decade
1920s
Peak decade
80% of everyone ever named Seiichi was born in this single decade.
1919
Single peak year
8 babies were named Seiichi in 1919 - its busiest year on record.
Seiichi's usage pattern, beyond the headline number
Seiichi splits its recorded history at 1924: 48% of all births land in the more recent half, 52% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1923 (5 births) -- compare that against the 1919 peak of 8 for a sense of just how much the name's popularity has swung.
Seiichi at a glance
Last recorded 1926Peak year
1919
Current rank
Unranked
Active since
1919
Seiichi popularity over time
Annual U.S. births registered with the Social Security Administration · 1919–1926
- Peak year (1919)
- 8
- Annual births at peak, across 8 years of records
Seiichi by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Seiichi's strongest decade.
32 babies received the name during that ten-year window, about 80% of all-time use.
Seiichi births by decade
Total births in each ten-year window
- 1910s 8
1910s
8 births
- 1920s
1920s
32 births
What this shows Peak: 1920s at 32 births (80% of all-time use).
Seiichi by state
Where Seiichi concentrates geographically, total births since 1919
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 5 | 12.5% |
| #2 | Hawaii | | 5 | 12.5% |
California share of Seiichi's total US births 12.5%
Even split
5 of 40 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Seiichi? ▼
Since 1919, Social Security records show 40 babies named Seiichi. The most recent recorded year was 1926. Its busiest year on record was 1919, with 8 births.
When was Seiichi most popular? ▼
Seiichi was most popular in the 1920s decade with 32 total births. The single peak year was 1919.
Where is Seiichi most popular? ▼
The top states for the name Seiichi are California (5 births), Hawaii (5 births).
How long has the name Seiichi been used? ▼
The SSA has tracked Seiichi since 1919 -- 8 years through the most recent 1926 data.
What names are similar to Seiichi? ▼
Names with a similar sound or spelling include Seiji, Seif, Seichi, Seith, and 4 more. These share a common prefix and are also used for boys.
What to do with Seiichi's data
- California records the most Seiichis (5 births) -- see the full state breakdown if geography matters to your decision. California 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 Seiichi
Nearby Names Like Seiichi
Names with a similar sound, spelling, or feel to Seiichi
Seiji Boy
#9068 517 births
Seif Boy
#10363 275 births
Seichi Boy
171 births
Seith Boy
125 births
Seiya Boy
#8631 112 births
Compare Seiichi side by side: Seiichi vs Seiji Seiichi vs Seif Seiichi vs Seichi
Related Names
Names with a similar number of total births
Data Sources
Data as of July 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, 1919–1926 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Seiichi: Baby Name Since 1919 - 40 Births, Peak 1919." NameAlmanac. Accessed via https://namealmanac.com/name/seiichi. 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 Seiichi 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 July 2026.