People with the first name Cassidy
55,593
About 1 in 5,962 Americans had this first name in the 2020 Census.
Measured, privacy-protected national Census count—not a total of historical baby-name records.
U.S. first-name statistics
How common is Cassidy?
Cassidy was the #838 most frequent first name in the 2020 Census.
National rank
#838
More common than 98.4% of listed first names
Peak year
1999
3,449 SSA-recorded births
2025 births
609
#999 across first names
Census frequency
1 in 5,962
Across the 2020 U.S. population
Sex distribution
Reported in the 2020 Census first-name table.
5.2% male94.8% female
Demographic distribution
Aggregated race and Hispanic-origin reporting in the 2020 Census name table.
Reading the result
Cassidy across two different records
The Census count answers “how many people had this name?” using a national snapshot of living residents in 2020. The SSA series answers “when was this name popular?” using Social Security card applications associated with births.
Cassidy reached its highest published annual SSA count in 1999, with 3,449 recorded births. In 2025, SSA recorded 609 babies with the name.
Names do not determine a person’s identity. Demographic percentages above describe national aggregates and should never be applied to an individual.
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