Cassie is a distinctive girls' name in United States, ranking #783 in 2007 with 367 recorded births. The name reached its all-time peak in 1998 with 979 births ranking #310. Since 1996, the popularity has decreased by 43.7%. In 2007, approximately 1 in every 5,238 girls born was named Cassie. STABLE Recent data shows the name is currently stable.