Cassady is a distinctive girls' name in United States, ranking #5743 in 2009 with 24 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #2226. Since 1996, the popularity has decreased by 41.5%. In 2009, approximately 1 in every 76,536 girls born was named Cassady. FALLING Recent data shows the name is currently falling.