Cassidy is a moderately popular girls' name in United States, ranking #478 in 2022 with 659 recorded births. This places Cassidy in the top 3% of ranked US girls' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 1999 with 3,395 births ranking #99. Since 1996, the popularity has decreased by 76.8%. In 2022, approximately 1 in every 2,487 girls born was named Cassidy. STABLE Recent data shows the name is currently stable.