Cassie is a distinctive girls' name in United States, ranking #547 in 2003 with 509 recorded births. The name reached its all-time peak in 1998 with 979 births ranking #310. Since 1996, the popularity has decreased by 21.9%. In 2003, approximately 1 in every 3,589 girls born was named Cassie. STABLE Recent data shows the name is currently stable.