Cassady is a distinctive girls' name in United States, ranking #2226 in 1999 with 67 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #2226. Since 1996, the popularity has increased by 63.4%. In 1999, approximately 1 in every 26,474 girls born was named Cassady. FALLING Recent data shows the name is currently falling.