Cassie is a distinctive girls' name in United States, ranking #664 in 2004 with 412 recorded births. The name reached its all-time peak in 1998 with 979 births ranking #310. Since 1996, the popularity has decreased by 36.8%. In 2004, approximately 1 in every 4,457 girls born was named Cassie. STABLE Recent data shows the name is currently stable.