Girls' name · since 1988
Sydnei
635 babies named Sydnei in U.S. Social Security records since 1988, with the highest year being 2005. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #10,165 of 72,339
- all-time among girls
- 635
- born since 1988
- 2000s
- peak decade
635 girls have been named Sydnei since 1988, though it isn't currently a top-ranked name.
Sydnei has 635 recorded births among girls since 1988, per the U.S. Social Security Administration, though it falls outside today's most-used girls 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 1988 to 2020.
- #10,165 of 72,339 all-time among girls
- 635 born since 1988
- 2000s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Sydnei ranks #10,165 of 72,339 girls' names by all-time recorded births (highest first). 635 born since 1988, peaking in the 2000s.
- #10,165 of 72,339
- all-time among girls
- 635
- born since 1988
- 2000s
- peak decade
Sydnei's 635 recorded births place it above 85.94% of the 72,339 girls names in the full SSA archive.
The state file records this name in 5 jurisdictions, led by Texas.
Sydnei's usage pattern, beyond the headline number
Divide Sydnei's SSA record in two at 2004 and the more recent half accounts for 49% of all births, the earlier half the remaining 51%, a genuinely balanced usage pattern. Its calmest year was 2019, with only 5 births recorded -- set against the 2005 peak of 37, that's the full swing in one name's fortunes.
Sydnei popularity over time
Annual U.S. births registered with the Social Security Administration · 1988–2020
- Peak year (2005)
- 37
- Annual births at peak, across 33 years of records
Sydnei by decade
2000s is the heaviest window (274 births, 43% of the file).
2000s was Sydnei's strongest decade.
274 babies received the name during that ten-year window, about 43% of all-time use.
Sydnei births by decade
Total births in each ten-year window
- 1980s 15
1980s
15 births
- 1990s
1990s
208 births
- 2000s
2000s
274 births
- 2010s
2010s
130 births
- 2020s 8
2020s
8 births
What this shows Peak: 2000s at 274 births (43% of all-time use).
How Sydnei compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 girls names closest to Sydnei's total volume
Sydnei by state
Where Sydnei concentrates geographically, total births since 1988
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Texas | | 21 | 3.3% |
| #2 | Georgia | | 20 | 3.1% |
| #3 | Louisiana | | 5 | 0.8% |
| #4 | Missouri | | 5 | 0.8% |
| #5 | Tennessee | | 5 | 0.8% |
21 of 635 births nationwide. Compared to a flat distribution across 5 reporting states.
Frequently Asked Questions
How popular is the name Sydnei? ▼
Where does Sydnei sit in the SSA name archive? ▼
When was Sydnei most popular? ▼
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How long has the name Sydnei been used? ▼
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What to do with Sydnei's data
- Sydnei's decade-level peak was the 2000s (274 total births); usage has since declined to 8 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Texas records the most Sydneis (21 births) -- see the full state breakdown if geography matters to your decision. Texas names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Sydnei
Nearby Names Like Sydnei
Names with a similar sound, spelling, or feel to Sydnei
Compare Sydnei side by side: Sydnei vs Sydney Sydnei vs Sydnee Sydnei vs Sydni
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Sydnei: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2005)
Similar record span (~32 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, 1988–2020 (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 Sydnei 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.