Casidy — girls' name
346 babies named Casidy in U.S. Social Security records since 1980, with the highest year being 2001. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
42% of everyone ever named Casidy was born in this single decade.
26 babies were named Casidy in 2001 — its busiest year on record.
What the Data Says About Casidy
The Social Security Administration has registered 346 babies named Casidy between 1980 and 2016, spanning 37 consecutive years of U.S. birth records. As a girl's name, Casidy currently falls outside the top 1,000 girls' names for 2016. The name reached its historical peak in 2001, when 26 babies received it in a single year.
Decade-level aggregation shows that Casidy performed strongest in the 2000s, accumulating 145 births during that ten-year window. Across the 4 decades of recorded activity, Casidy shows notable generational variation in parental adoption.
No etymological entry is currently available for Casidy in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 346 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.
Casidy at a glance
Last recorded 2016Peak year
Current rank
Active since
Casidy popularity over time
Annual U.S. births registered with the Social Security Administration · 2016–1980
- Peak year (2001)
- 26
- Annual births at peak — across 37 years of records
No longer in the modern top-1000 — last recorded 2016.
346 total births across 37 years of SSA records. Peaked in 2001 with 26 births in a single year.
Casidy by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 2000s
- 145 births that decade — 42% of Casidy's all-time total
Casidy decade highlights
- Peak decade 145 births
- Runner-up 116 births
- Modern era share 2010s + 2020s
- Decades tracked with recorded births
2000s was Casidy's strongest decade
145 babies received the name during that ten-year window — about 42% of all-time use.
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Data Sources
Data as of 2024. Source: U.S. Social Security Administration (SSA).
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1980–2016 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.
State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.