Total births
24
Unisex name · since 1921
Seiko
Since 1921, U.S. Social Security records show 24 babies named Seiko, peaking in 1924. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 24
- total births
- 1921–1925
- years on record
- 1920s
- peak decade
- 100%
- born in that decade
Seiko sits outside today's top ranks for boys, with 24 recorded since 1921.
According to the U.S. Social Security Administration, Seiko has been recorded 24 times among boys since 1921, 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 1921 to 1925.
- 24 total births
- 1921–1925 years on record
- 1920s peak decade
- 100% born in that decade
Data updated Jul 2026
The verdict
24 boys have been named Seiko since 1921, peaking in the 1920s, last recorded in 1925.
- 24
- total births
- 1921–1925
- years on record
- 1920s
- peak decade
- 100%
- born in that decade
1920s
Peak decade
100% of everyone ever named Seiko was born in this single decade.
1924
Single peak year
7 babies were named Seiko in 1924 - its busiest year on record.
Seiko's usage pattern, beyond the headline number
Splitting Seiko's full recorded timeline at 1924, 50% of its total births fall in the more recent half of the record versus 50% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1925, with just 5 recorded births -- worth weighing against the 1924 peak of 7 to see the full range of the name's swing in popularity.
Seiko at a glance
Last recorded 1925Peak year
1924
Current rank
Unranked
Active since
1921
Seiko popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1921–1925
- Peak year (1924)
- 7
- Annual births at peak, across 5 years of records
Seiko popularity over time - girls
11 total births recorded since 1919 (Seiko as girls' name)
Seiko by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Seiko's strongest decade.
24 babies received the name during that ten-year window, about 100% of all-time use.
Seiko births by decade
Total births in each ten-year window
- 1920s
1920s
24 births
What this shows Peak: 1920s at 24 births (100% of all-time use).
Seiko by state
Where Seiko concentrates geographically, total births since 1921
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Hawaii | | 23 | 95.8% |
Hawaii share of Seiko's total US births 95.8%
23 of 24 births nationwide.
Frequently Asked Questions
How popular is the name Seiko? ▼
Since 1921, Social Security records show 24 babies named Seiko. The most recent recorded year was 1925. Its busiest year on record was 1924, with 7 births.
When was Seiko most popular? ▼
Seiko was most popular in the 1920s decade with 24 total births. The single peak year was 1924.
Where is Seiko most popular? ▼
The top states for the name Seiko are Hawaii (23 births).
Is Seiko a unisex name? ▼
Yes, Seiko is used for both boys and girls. As a boy's name it has 24 births, and as a girl's name it has 11 births.
How long has the name Seiko been used? ▼
Seiko has been recorded in Social Security data since 1921, spanning 5 years of data through 1925.
What names are similar to Seiko? ▼
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 Seiko's data
- Hawaii records the most Seikos (23 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 Seiko
Nearby Names Like Seiko
Names with a similar sound, spelling, or feel to Seiko
Seiji Boy
#9068 517 births
Seif Boy
#10363 275 births
Seichi Boy
171 births
Seith Boy
125 births
Seiya Boy
#8631 112 births
Compare Seiko side by side: Seiko vs Seiji Seiko vs Seif Seiko 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, 1921–1925 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Seiko: Baby Name Since 1921 - 24 Births, Peak 1924." NameAlmanac. Accessed via https://namealmanac.com/name/seiko. 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 Seiko 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.