Kassidy is a moderately popular girls' name in United States, ranking #467 in 2012 with 668 recorded births. The name reached its all-time peak in 2000 with 1,007 births ranking #314. Since 1996, the popularity has increased by 14.0%. In 2012, approximately 1 in every 2,636 girls born was named Kassidy. FALLING Recent data shows the name is currently falling.