Total births
347
Girls' name · since 1980
Casidy
Since 1980, U.S. Social Security records show 347 babies named Casidy, peaking in 2001. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 347
- total births
- 1980–2016
- years on record
- 2000s
- peak decade
- 42%
- born in that decade
347 girls have been named Casidy since 1980, though it isn't currently a top-ranked name.
According to the U.S. Social Security Administration, Casidy has been recorded 347 times among girls since 1980, though it is not among the currently most-used girls names, with its heaviest use in the 2000s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1980 to 2016.
- 347 total births
- 1980–2016 years on record
- 2000s peak decade
- 42% born in that decade
Data updated Jul 2026
The verdict
347 girls have been named Casidy since 1980, peaking in the 2000s, last recorded in 2016.
- 347
- total births
- 1980–2016
- years on record
- 2000s
- peak decade
- 42%
- born in that decade
2000s
Peak decade
42% of everyone ever named Casidy was born in this single decade.
2001
Single peak year
26 babies were named Casidy in 2001 - its busiest year on record.
Casidy's usage pattern, beyond the headline number
Divide Casidy's SSA record in two at 2000 and the more recent half accounts for 57% of all births, the earlier half the remaining 43%, a genuinely balanced usage pattern. Its calmest year was 1980, with only 5 births recorded -- set against the 2001 peak of 26, that's the full swing in one name's fortunes.
Casidy at a glance
Last recorded 2016Peak year
2001
Current rank
Unranked
Active since
1980
Casidy popularity over time
Annual U.S. births registered with the Social Security Administration · 1980–2016
- Peak year (2001)
- 26
- Annual births at peak, across 37 years of records
Casidy by decade
Total births in each ten-year window, peak vs trough at a glance
2000s was Casidy's strongest decade.
145 babies received the name during that ten-year window, about 42% of all-time use.
Casidy births by decade
Total births in each ten-year window
- 1980s 34
1980s
34 births
- 1990s
1990s
116 births
- 2000s
2000s
145 births
- 2010s 52
2010s
52 births
What this shows Peak: 2000s at 145 births (42% of all-time use).
Frequently Asked Questions
How popular is the name Casidy? ▼
Since 1980, Social Security records show 347 babies named Casidy. The most recent recorded year was 2016. Its busiest year on record was 2001, with 26 births.
When was Casidy most popular? ▼
Casidy was most popular in the 2000s decade with 145 total births. The single peak year was 2001.
How long has the name Casidy been used? ▼
Casidy has been recorded in Social Security data since 1980, spanning 37 years of data through 2016.
What names are similar to Casidy? ▼
Names with a similar sound or spelling include Cassandra, Casey, Cassidy, Cassie, and 4 more. These share a common prefix and are also used for girls.
What to do with Casidy's data
- Casidy's usage has stayed within range of its 2000s decade-level peak (145 total births) through the 2010s (52) -- a comparatively stable name, not a fading trend.
- 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 Casidy
Nearby Names Like Casidy
Names with a similar sound, spelling, or feel to Casidy
Cassandra Girl
#615 171,008 births
Casey Girl
#1054 78,100 births
Cassidy Girl
#478 60,848 births
Cassie Girl
#1270 46,642 births
Casandra Girl
#8506 15,784 births
Compare Casidy side by side: Casidy vs Cassandra Casidy vs Casey Casidy vs Cassidy
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, 1980–2016 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Casidy: Baby Name Since 1980 - 347 Births, Peak 2001." NameAlmanac. Accessed via https://namealmanac.com/name/casidy. 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 Casidy 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.