Boys' name · since 2000
Ryusei
28 babies named Ryusei in U.S. Social Security records since 2000, with the highest year being 2000. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #26,502 of 45,481
- all-time among boys
- 28
- born since 2000
- 2000s
- peak decade
28 boys have been named Ryusei since 2000, though it isn't currently a top-ranked name.
Ryusei has 28 recorded births among boys since 2000, per the U.S. Social Security Administration, though it falls outside today's most-used boys names, busiest in the 2000s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 2000 to 2012.
- #26,502 of 45,481 all-time among boys
- 28 born since 2000
- 2000s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Ryusei ranks #26,502 of 45,481 boys' names by all-time recorded births (highest first). 28 born since 2000, peaking in the 2000s.
- #26,502 of 45,481
- all-time among boys
- 28
- born since 2000
- 2000s
- peak decade
Ryusei's 28 recorded births place it above 41.62% of the 45,481 boys names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
Ryusei's usage pattern, beyond the headline number
Splitting Ryusei's full recorded timeline at 2009, 57% of its total births fall in the more recent half of the record versus 43% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 2009, with just 5 recorded births -- worth weighing against the 2000 peak of 6 to see the full range of the name's swing in popularity.
Ryusei popularity over time
Annual U.S. births registered with the Social Security Administration · 2000–2012
- Peak year (2000)
- 6
- Annual births at peak, across 13 years of records
Ryusei by decade
2000s is the heaviest window (17 births, 61% of the file).
2000s was Ryusei's strongest decade.
17 babies received the name during that ten-year window, about 61% of all-time use.
Ryusei births by decade
Total births in each ten-year window
- 2000s
2000s
17 births
- 2010s
2010s
11 births
What this shows Peak: 2000s at 17 births (61% of all-time use).
Frequently Asked Questions
How popular is the name Ryusei? ▼
Where does Ryusei sit in the SSA name archive? ▼
When was Ryusei most popular? ▼
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What to do with Ryusei's data
- Ryusei's usage has stayed within range of its 2000s decade-level peak (17 total births) through the 2010s (11) -- a comparatively stable name, not a fading trend.
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Ryusei
Nearby Names Like Ryusei
Names with a similar sound, spelling, or feel to Ryusei
Compare Ryusei side by side: Ryusei vs Ryu Ryusei vs Ryun Ryusei vs Ryuu
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Ryusei: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2000)
Similar record span (~12 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, 2000–2012 (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 Ryusei 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.