Cassie is a distinctive girls' name in United States, ranking #715 in 2005 with 382 recorded births. The name reached its all-time peak in 1998 with 979 births ranking #310. Since 1996, the popularity has decreased by 41.4%. In 2005, approximately 1 in every 4,837 girls born was named Cassie. STABLE Recent data shows the name is currently stable.