Unisex name · since 1969
Cassidy
60,848 babies named Cassidy in U.S. Social Security records since 1969, with the highest year being 1999. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #524 of 72,339
- all-time among girls
- #541 of 17,297
- 2025 SSA year
- 60,848
- born since 1969
- 2000s
- peak decade
60,848 babies have been named Cassidy since 1969, making it today's #541 unisex name.
Social Security Administration records show Cassidy recorded 60,848 times among girls since 1969, holding rank #541 nationally today, ahead of 97% of girls, peaking in the 2000s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1969 to 2025.
- #524 of 72,339 all-time among girls
- #541 of 17,297 2025 SSA year
- 60,848 born since 1969
- 2000s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Cassidy ranks #524 of 72,339 girls' names by all-time recorded births (highest first) and #541 of 17,297 among girls' names in 2025. 60,848 born since 1969, peaking in the 2000s.
- #524 of 72,339
- all-time among girls
- #541 of 17,297
- 2025 SSA year
- 60,848
- born since 1969
- 2000s
- peak decade
Cassidy's 60,848 recorded births place it above 99.27% of the 72,339 girls names in the full SSA archive.
51 jurisdictions carry state-level records, led by California.
How Cassidy compares
60,848 Top 4% higher than 96% of 17,297 names currently given to girls
Based on all-time total births among currently-ranked girls names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Cassidy's all-time total is 162x the median girls name, and Olivia still leads by a wide margin.
| Metric | Cassidy | Median girls name (Kyann) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 60,848 | 376 | 567,345 |
| Peak-year births | 3,395 | 21 | 19,840 |
Cassidy's usage pattern, beyond the headline number
Splitting Cassidy's full recorded timeline at 1997, 75% of its total births fall in the more recent half of the record versus 25% in the earlier half -- usage has skewed toward the present, not a one-decade spike. Its quietest year on record was 1969, with just 5 recorded births -- worth weighing against the 1999 peak of 3,395 to see the full range of the name's swing in popularity.
Cassidy popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 1969–2025
- Peak year (1999)
- 3,395
- Annual births at peak, across 57 years of records
Cassidy popularity over time - boys
3,735 total births recorded since 1968 (Cassidy as boys' name)
Cassidy by decade
2000s is the heaviest window (21,180 births, 35% of the file).
2000s was Cassidy's strongest decade.
21,180 babies received the name during that ten-year window, about 35% of all-time use.
Cassidy births by decade
Total births in each ten-year window
- 1960s 5
1960s
5 births
- 1970s 523
1970s
523 births
- 1980s 3,341
1980s
3,341 births
- 1990s
1990s
20,659 births
- 2000s
2000s
21,180 births
- 2010s
2010s
11,235 births
- 2020s 3,905
2020s
3,905 births
What this shows Peak: 2000s at 21,180 births (35% of all-time use).
How Cassidy 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 Cassidy's total volume
Cassidy by state
Where Cassidy concentrates geographically, total births since 1969
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 6,258 | 10.3% |
| #2 | Texas | | 4,238 | 7.0% |
| #3 | Pennsylvania | | 3,064 | 5.0% |
| #4 | New York | | 3,057 | 5.0% |
| #5 | Florida | | 2,975 | 4.9% |
| #6 | Ohio | | 2,654 | 4.4% |
| #7 | Illinois | | 2,242 | 3.7% |
| #8 | Michigan | | 2,164 | 3.6% |
6,258 of 60,848 births nationwide. Compared to a flat distribution across 51 reporting states.
Cassidy appears in 51 states. Explore state details →
Frequently Asked Questions
How popular is the name Cassidy? ▼
Where does Cassidy sit in the SSA name archive? ▼
When was Cassidy most popular? ▼
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What to do with Cassidy's data
- Cassidy's decade-level peak was the 2000s (21,180 total births); usage has since declined to 3,905 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Cassidys (6,258 births) -- see the full state breakdown if geography matters to your decision. California names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Cassidy
Nearby Names Like Cassidy
Names with a similar sound, spelling, or feel to Cassidy
Compare Cassidy side by side: Cassidy vs Cassandra Cassidy vs Casey Cassidy vs Cassie
Related Names
Names with a similar popularity rank to Cassidy
Nationwide names with similar peak year or record span
Two nationwide peer axes for Cassidy: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1999)
Similar record span (~56 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, 1969–2025 (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 Cassidy 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.