Cassady is a distinctive girls' name in United States, ranking #3816 in 2003 with 36 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #2226. Since 1996, the popularity has decreased by 12.2%. In 2003, approximately 1 in every 50,751 girls born was named Cassady. FALLING Recent data shows the name is currently falling.