Cassie is a distinctive girls' name in United States, ranking #954 in 2009 with 280 recorded births. The name reached its all-time peak in 1998 with 979 births ranking #310. Since 1996, the popularity has decreased by 57.1%. In 2009, approximately 1 in every 6,560 girls born was named Cassie. STABLE Recent data shows the name is currently stable.