Kassidy is a moderately popular girls' name in United States, ranking #488 in 2011 with 607 recorded births. This places Kassidy in the top 2% of ranked US girls' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 2000 with 1,007 births ranking #314. In 2011, approximately 1 in every 2,898 girls born was named Kassidy. FALLING Recent data shows the name is currently falling.