Girls' name · since 1949
Sidni
Since 1949, U.S. Social Security records show 236 babies named Sidni, peaking in 1995. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #18,163 of 72,339
- all-time among girls
- 236
- born since 1949
- 1990s
- peak decade
236 girls have been named Sidni since 1949, though it isn't currently a top-ranked name.
According to the U.S. Social Security Administration, Sidni has been recorded 236 times among girls since 1949, though it is not among the currently most-used girls names, with its heaviest use in the 1990s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1949 to 2013.
- #18,163 of 72,339 all-time among girls
- 236 born since 1949
- 1990s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Sidni ranks #18,163 of 72,339 girls' names by all-time recorded births (highest first). 236 born since 1949, peaking in the 1990s.
- #18,163 of 72,339
- all-time among girls
- 236
- born since 1949
- 1990s
- peak decade
Sidni's 236 recorded births place it above 74.88% of the 72,339 girls names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
Sidni's usage pattern, beyond the headline number
Splitting Sidni's full recorded timeline at 2000, 47% of its total births fall in the more recent half of the record versus 53% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1949, with just 5 recorded births -- worth weighing against the 1995 peak of 21 to see the full range of the name's swing in popularity.
Sidni popularity over time
Annual U.S. births registered with the Social Security Administration · 1949–2013
- Peak year (1995)
- 21
- Annual births at peak, across 65 years of records
Sidni by decade
1990s is the heaviest window (112 births, 47% of the file).
1990s was Sidni's strongest decade.
112 babies received the name during that ten-year window, about 47% of all-time use.
Sidni births by decade
Total births in each ten-year window
- 1940s 5
1940s
5 births
- 1980s 8
1980s
8 births
- 1990s
1990s
112 births
- 2000s
2000s
99 births
- 2010s 12
2010s
12 births
What this shows Peak: 1990s at 112 births (47% of all-time use).
Frequently Asked Questions
How popular is the name Sidni? ▼
Where does Sidni sit in the SSA name archive? ▼
When was Sidni most popular? ▼
How long has the name Sidni been used? ▼
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What to do with Sidni's data
- Sidni's decade-level peak was the 1990s (112 total births); usage has since declined to 12 in the 2010s -- if you're weighing a "classic revival" angle, the trend line argues against it.
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Sidni
Nearby Names Like Sidni
Names with a similar sound, spelling, or feel to Sidni
Compare Sidni side by side: Sidni vs Sidney Sidni vs Sidra Sidni vs Sidnee
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Sidni: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1995)
Similar record span (~64 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, 1949–2013 (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 Sidni 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.