Cassady is a distinctive girls' name in United States, ranking #8353 in 2010 with 14 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #2226. Since 1996, the popularity has decreased by 65.9%. In 2010, approximately 1 in every 126,952 girls born was named Cassady. FALLING Recent data shows the name is currently falling.